taxonID	type	description	language	source
2819F6ADB10756D596C2A83209625D43.taxon	description	Figs 132, 133	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
2819F6ADB10756D596C2A83209625D43.taxon	distribution	Distribution and occurrence. Acheta domesticus is a synanthrope species with a worldwide distribution nowadays. Its original distribution area was presumably comprised of northern Africa, southern Europe and southwest Asia, which is comparable to other members of the genus (Gorochov and Llorente 2001). On Socotra, only three recent records of this presumed species are known, two in the southern coastal area and one in Wadi Ayhaft (Fig. 133).	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
8814DBBC38A75C64BFD7AF20E17F675D.taxon	description	Figs 134, 135, 136, 137, 138	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
8814DBBC38A75C64BFD7AF20E17F675D.taxon	distribution	Distribution and occurrence. Endemic to Socotra. The crickets are found throughout the island. In 2009 and 2010, the species was common in Ayhaft, Qeysoh, Adho Dimello, Begobig and various localities in Dixam (Fig. 136).	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
943E9EEC77405E1C9894EEA2E4BEDB9F.taxon	description	Figs 21, 22	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
943E9EEC77405E1C9894EEA2E4BEDB9F.taxon	distribution	Distribution and occurrence. Acorypha bimaculata is endemic to the Socotra Archipelago and occurs on Socotra and Samha. It is a widespread and common species in the Hagher and limestone plateaus. The type locality of A. bimaculata is Ras Shuab. Since the cape (Ras) is an unreachable site because of pure rock and surf, we consider the collecting site to be the coastal area of Shuab instead, north of the cape (Fig. 22).	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
04EB2F1EBF6C5F7BB59F60507BD98AB7.taxon	description	Figs 23, 24	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
04EB2F1EBF6C5F7BB59F60507BD98AB7.taxon	distribution	Distribution and occurrence. It has a wide distribution from Sahelian West Africa, Uganda, Tanzania, Ethiopia and Somalia, as well as Arabia and India (Rowell and Hemp 2017). On Socotra, the species is widespread and locally very common on coastal plains, like Hadiboh Plain. It is much scarcer at higher elevations (Fig. 24).	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
6B54145FCDE05A378D8C8D6A2D31AFA9.taxon	description	Figs 58, 59, 60, 61, 64, 65	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
6B54145FCDE05A378D8C8D6A2D31AFA9.taxon	distribution	Distribution and occurrence. A. incarnatus is endemic to Socotra. It is widespread and very common and one of the most numerous species of grasshoppers (Fig. 61). Despite its abundance and widespread distribution on Socotra, there are no known records from other islands in the Archipelago. Acrotylus longipes occurs in southern Europe, northern Africa, Central Asia and the Middle East, including Arabia.	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
59480BD70FFF5467B8F1165FCCBE760E.taxon	description	Figs 62, 63, 64, 65, 66	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
59480BD70FFF5467B8F1165FCCBE760E.taxon	description	Re-description. Since Uvarov (1933) gave a limited species description and Ingrisch (1999) raised the taxon to the species level, based on specimens belonging to a different species, we provide a short re-description based on the type material. Apart from the characters already mentioned by Uvarov (1933), A. innotatus is characterised by a step-like raised anterior half of the prozona in front of the first transverse sulcus (Fig. 64 D). The pronotum has a well-pronounced median carina cut / impressed by two sulci, the mentioned first transverse sulcus and the principal sulcus. The dorsal part of the pronotum is strongly sculptured. The posterior margin of the pronotum is subrounded (Fig. 64 A). The base of the hind wing is pinkish-red with a more or less darkened (infumated) apical half and dark spots are present on the apex of the hind wing (Fig. 63).	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
59480BD70FFF5467B8F1165FCCBE760E.taxon	distribution	Distribution and occurrence. Based on the type series of A. innotatus, the species occurs from Somalia through the Arabian Peninsula into Iran. Future studies could show that the actual distribution of the species is more restricted than that, as several paratypes from Somalia and Iran might represent other species. Hemp and Rowell (2020) state that A. innotatus only occurs in Arabia. On Socotra, the species is restricted to the eastern part of the island, occurring on the limestone plateaus of Dixam and Momi and in the Hagher (Fig. 66). Due to the superficial resemblance with incarnatus, it is probably overlooked.	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
88578276FBF659EF98B5D2838DF93EE7.taxon	description	Figs 67, 68	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
88578276FBF659EF98B5D2838DF93EE7.taxon	distribution	Distribution and occurrence. Aiolopus thalassinus is widely distributed in Europe, Africa and western Asia. On Socotra, it is widely distributed, but restricted to sites with suitable habitat, from Qalansiyah in the west to Arher in the east (Fig. 68). It is an abundant species on many sites, for example, in Wadi Zerig, Qeysoh and Adho Dimello.	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
4603E321D1755833815848E4C4D3B7AA.taxon	description	Fig. 30	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
4603E321D1755833815848E4C4D3B7AA.taxon	distribution	Distribution and occurrence. Anacridium m. arabafrum occurs from Ethiopia and Sudan eastwards into Yemen and Saudi Arabia. On Socotra, it appears to be relatively scarce, with only a handful of widespread records at lower elevations (Fig. 30). Burr (1898, 1903) mentioned nymphs of Acridium sp., which may refer to this species.	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
96E61FCC73D958279BED4187F4A08849.taxon	description	Figs 34, 35	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
96E61FCC73D958279BED4187F4A08849.taxon	distribution	Distribution and occurrence. Cataloipus brunneri is endemic to Socotra. There are few records from the Hagher, the surrounding limestone plateaus and the surroundings of Qalansiyah (Fig. 35). There are no records of the species since 2008.	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
8D90B109127959B89597D56A2F470CAF.taxon	description	Figs 199, 200, 201, 202	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
8D90B109127959B89597D56A2F470CAF.taxon	distribution	Distribution and occurrence. The species is widespread in Africa and Asia. On Socotra, it is widespread, but only locally common. It also occurs in the Hagher, on the limestone plateaus and near Qalansiyah (Fig. 201).	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
9826D174BC1E5291A1B4F50B57F7FBDA.taxon	description	Fig. 31	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
9826D174BC1E5291A1B4F50B57F7FBDA.taxon	distribution	Distribution and occurrence. Cyrtacanthacris tatarica occurs in Africa south of the Sahara and is common in Madagascar and the Seychelles, SW Asia, S Asia to Sumatra and the Philippines (Hemp and Rowell 2020). On Socotra, it is relatively scarce, with some scattered older records in the eastern part of the island. We did not find the species in 2009 and 2010. Records are from January to May (Fig. 31).	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
6760F229E6C859B7B9ABDC152479F880.taxon	description	Figs 25, 26	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
6760F229E6C859B7B9ABDC152479F880.taxon	distribution	Distribution and occurrence. It occurs across the dry savannah belt south of the Sahara, in the Arabian Peninsula, Iran and several Indian Ocean islands, including Socotra, where it is widespread and ubiquitous at low elevations (Fig. 26). It is one of the most common insects on the island (Popov in Uvarov and Popov (1957)). In 2009 and 2010, we encountered hundreds of individuals on many lowland sites.	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
74F7E57041235AC587DF17BB6578184F.taxon	description	Fig. 117	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
74F7E57041235AC587DF17BB6578184F.taxon	distribution	Distribution and occurrence. Dictyophorus griseus is a common and widespread species in tropical Africa. The only known specimen from Socotra was photographed on 16 Jan 2019 near Hadiboh (Fig. 117). It is not a native species to the Archipelago and must have been introduced. It was probably ship-assisted.	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
D36CCE86D2625338AB3F4FD98F6A87E0.taxon	description	Figs 27, 28, 29	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
D36CCE86D2625338AB3F4FD98F6A87E0.taxon	distribution	Distribution and occurrence. Dioscoridus is endemic to Socotra. Records are mainly from the Hagher and the surrounding limestone plateaus, but singletons in the west at Shuab suggest a much wider distribution (Fig. 29). It is considered uncommon, but may be easily overlooked due to its partially hidden way of life. The labels of the specimens collected by Guichard on Mt. Shihali mention an elevation of 1500 m a. s. l. Since the peak of this mountain reaches 1324 m a. s. l., this is a mistake. Furthermore, Guichard’s field notes (1967) show he visited “ the mountain’s lower slopes ” on 20 April 1967, not the mountain’s peak. Based on this information and our knowledge of the area, we estimate the collecting site of these specimens to be more or less around 1100 m a. s. l. in an area much closer to Adho Dimello.	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
F20DDD07156F574EABA899AB6DD6CBE7.taxon	description	Figs 152, 153, 154, 155, 156	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
F20DDD07156F574EABA899AB6DD6CBE7.taxon	distribution	Distribution and occurrence. E. guichardi is endemic to Socotra. It is known from the Hagher, Diksam, Momi and Hamadera and is locally common, for example, at Adho Dimello, where large numbers were heard singing at night in 2010 (Fig. 155). For remarks on Guichard’s collecting site on Mt. Shihali on 20 April 1967, see the species account of Dioscoridus depressus.	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
A49C8B7F7ABD5AF4A9B014CDB4CC59BF.taxon	description	Figs 157, 158	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
A49C8B7F7ABD5AF4A9B014CDB4CC59BF.taxon	distribution	Distribution and occurrence. E. sp. 2 is known from Adho Dimello in the Hagher, where fair numbers were heard singing at night in 2010. Its song has also been recorded at Neet in 2010.	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
570A47735B465D2E853FEC0BAA5C454A.taxon	description	Figs 159, 161	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
570A47735B465D2E853FEC0BAA5C454A.taxon	distribution	Distribution and occurrence. Ectatoderus sp. 3 is known from two photographic records by James Bailey in 2024, one at Firmihin and one on Noged Plain (Figs 159, 160), both in two very different habitats. These records suggest a rather wide distribution on the island (see https: // www. inaturalist. org / observations / 203184039 and https: // www. inaturalist. org / observations / 199187230. E. sp. 3 probably also occurs at Neet.	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
99022DEC2AFE5124BC25CE4DD537ED0F.taxon	description	Figs 43, 44, 45	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
99022DEC2AFE5124BC25CE4DD537ED0F.taxon	distribution	Distribution and occurrence. Ermia variabilis is endemic to Socotra and confined to the Hagher massif, Dixam Plateau, Hamadero hills, Homhil and the Maaleh hills (Cheyrha) (Fig. 44). At Adho Dimello, it is abundant. Popov collected one of the paratypes at Bijo, positioned on the map presented in Uvarov and Popov (1957) at 185 m a. s. l. It contradicts the statement by the same author that the species occurs above 2000 ft (609 m a. s. l.) (Popov in Uvarov and Popov (1957)). The label information is probably inaccurate and the specimen most likely has been found much higher in the mountains than at Bijo. For remarks on Guichard’s collecting site on Mt. Shihali on 20 April 1967, see the species account of Dioscoridus depressus.	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
CF0D58F0C3665107912BB26341C9FBFD.taxon	description	Figs 144, 145, 146, 147	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
CF0D58F0C3665107912BB26341C9FBFD.taxon	distribution	Distribution and occurrence. E. chivensis was described from Ak-Mechet, near Khiva, in modern Uzbekistan (not Khazachstan as indicated by OSF). It is known from Oman and Saudi Arabia (Gorochov 1993), the United Arab Emirates (Gorochov 2017) and China (Ma et al. 2021). It is new for Socotra and is only known from three specimens at Neet (Fig. 146).	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
29A99497D65A58B89049F6A77D1B8408.taxon	description	Figs 185, 186, 187, 188, 189, 190	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
29A99497D65A58B89049F6A77D1B8408.taxon	description	Re-description. Male: moderate size, body sandy-coloured with extensive black markings, shiny, eyes black. The posterior margins of the mesonotum, metanotum and abdominal segments are broadly marked black. The femora laterally and ventrally are extensively marked black and the tibiae, dorsally, have a black spot near their base. Lip sandy-coloured, jaws black, paler towards the base. The antennae are four times as long as the body, the two basal segments are sandy-coloured and from the third segment onwards, the antennae display a colour transition from blackish to dark brown and yellowish (Figs 185, 187). The posterior margin of the subgenital plate is essentially convex with a slightly truncated apex, ventrally with a depression in the centre (Fig. 188). Female: same as male, except large size, much larger than male. Ovipositor elongate and rather thick, acuminate; the lower margin is almost straight and the upper slightly arched upwards (Fig. 187). The subgenital plate in the female is triangular, anteflexed and bifid at the apex, with elongated slender lobes (Fig. 189) — Body length male: 23 mm; female: 33 mm; ovipositor: 18 mm. Both are based on only one specimen each, so we recommend a future examination of a small series of specimens.	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
29A99497D65A58B89049F6A77D1B8408.taxon	distribution	Distribution and occurrence. Endemic to Socotra. Apparently, it is rare and local and confined to Dixam and the Hagher. Popov collected the holotype “ between RAF camp and Muhullus ”. The map in Uvarov and Popov (1957) shows the route Popov travelled in 1953, between the RAF camp in the north and Mahalis in the south, crossing Dixam at a point around 3000 feet (914 m a. s. l.). We expect the collecting site to be near that site (Fig. 190). Other Orthoptera specimens collected that day by Popov bear the label “ 10 miles south of RAF Camp ”, which fits the above site description.	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
4AB8E5C5E0D5514D9B25669C241EC754.taxon	description	Figs 188, 189, 195, 196, 197, 198	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
4AB8E5C5E0D5514D9B25669C241EC754.taxon	distribution	Distribution and occurrence. The species is endemic to Socotra. Only a few records are known, scattered over the island (Fig. 197), but the species is probably overlooked. Uvarov (in Uvarov and Popov (1957)) mentioned that the collection site of the holotype is at 3000 ft [914 m a. s. l.]; Popov (1984) noted 100 m a. s. l. (300 ft) as elevation, as also stated on the label. We consider the latter to be correct (see Discussion).	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
9C3DE2A12120588DBC30C6CE620BCDE4.taxon	description	Figs 188, 189, 191, 192, 193, 194	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
9C3DE2A12120588DBC30C6CE620BCDE4.taxon	distribution	Distribution and occurrence. Endemic to Socotra. Relatively widespread and not as rare as mentioned by Uvarov (in Uvarov and Popov (1957)) and Wranik (2003) (Fig. 193). Glomeremus spp. are called Brothers of the Goats in Socotri (Wranik 2003), suggesting a relatively common appearance on the island.	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
7B325034BA255579A44B5EEAE37695AE.taxon	description	Figs 139, 140, 141	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
7B325034BA255579A44B5EEAE37695AE.taxon	distribution	Distribution and occurrence. Gryllodes sigillatus has a worldwide distribution and is widespread on Socotra (Fig. 140).	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
521429460AAF56A3ABBBD73C8A4E7CCC.taxon	description	Figs 182, 183, 184	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
521429460AAF56A3ABBBD73C8A4E7CCC.taxon	distribution	Distribution and occurrence. G. africana is found throughout Africa, on the Canary Islands and mentioned for Socotra (Townsend 1983). Records on Socotra are from several sites across the island, from the lowlands and limestone plateaus to the Hagher (Fig. 184). Most historical records are from Hadiboh and the surrounding plain (Oxford expedition and Popov’s specimens). Some tens of individuals were recorded at night in Feb 2009 at Qeysoh in the west and Momi Plateau in the east. On 30 Oct 2010, individuals were singing deep down the valley from the base camp at Adho Dimello.	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
5C9C5D98C97D50808E33D63CA938F4C6.taxon	description	Figs 142, 143	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
5C9C5D98C97D50808E33D63CA938F4C6.taxon	distribution	Distribution and occurrence. Gryllus bimaculatus is a widespread species in southern Europe, northern and eastern Africa and parts of Asia. It is known to swarm and cross large distances, also across open seas (Ragge 1972). Only one ancient record (1899) is known from the island, while recent ones are numerous (Fig. 142). It could mean that the island has been colonised several times, with only the recent one being successful. In 2010, it was common in Ayhaft and Adho Dimello.	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
36188E1523FA5F0D8375773DBD6ABFED.taxon	description	Figs 36, 37, 38	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
36188E1523FA5F0D8375773DBD6ABFED.taxon	distribution	Distribution and occurrence. H. adspersa is distributed along the Atlantic and Mediterranean coasts of North Africa, southern Europe and Arabia east to India (Grunshaw 1991). On Socotra, the species seems to be rare, restricted to Shuab and Neet in the west (Fig. 37).	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
FAFB0475CB6F5337A5CA3FF2C9C0656D.taxon	description	Fig. 39	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
FAFB0475CB6F5337A5CA3FF2C9C0656D.taxon	distribution	Distribution and occurrence. It is widespread in North Africa, the Mediterranean, the Middle East, Central Asia and Arabia (Grunshaw 1991). In the Socotra Archipelago, it has only been found once on Abd el Kuri by Kenneth Guichard (Fig. 39) (Guichard 1967; Grunshaw 1991). He collected six specimens on 7 May 1967, labelled with the locality J. Saleh. According to his travel notes, he went up Jebel Saleh on its north-western slope that date and collected some Scintharista notabilis (Walker, 1870) there (Guichard 1967). The material is probably in the NHMUK, but we did not find it.	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
8FDCFAC6DDD35FB3BF2B83284D4F5CF0.taxon	description	Figs 40, 41, 42	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
8FDCFAC6DDD35FB3BF2B83284D4F5CF0.taxon	distribution	Distribution and occurrence. Heteracris coerulescens occurs in north-eastern Africa, south into Tanzania and locally in Yemen. On Socotra, it has only been found on three sites on three occasions (Fig. 42). The first record is from Homhil, collected by Ogilvie-Grant in 1899 and labelled by Burr as Cataloipus oberthuri (Burr 1903; Uvarov 1921). The second record is from Hadiboh Plain in 1967, by Guichard. The third is from Wadi Di Farhoh in 2024. Records are from February, April and May.	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
56B5387AD2C35C5FA1C1C6DB62110165.taxon	description	Figs 148, 149, 150, 151	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
56B5387AD2C35C5FA1C1C6DB62110165.taxon	distribution	Distribution and occurrence. This species is only known from Natal and Transvaal in eastern South Africa (Otte and Cade 1984; Otte et al. 1988), Saudi Arabia and Socotra (Gorochov 1993). On Socotra, it is widespread (Fig. 150). In Oct 2010, it was abundant at Wadi Zerig, Adho Dimello and Wadi Shilhin.	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
852F1E314AB65EDA87A8CAF7BC6AE91A.taxon	description	Fig. 160	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
852F1E314AB65EDA87A8CAF7BC6AE91A.taxon	distribution	Distribution and occurrence. Mogoplistes aff. M. brunneus is known from several records on the island, suggesting a rather wide distribution. See https: // www. inaturalist. org / observations / 203184073.	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
68C3068D61815805964F46A024D91DF1.taxon	description	Fig. 46	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
68C3068D61815805964F46A024D91DF1.taxon	distribution	Distribution and occurrence. This species inhabits large parts of northern Africa, south into Kenya, on the Arabian Peninsula and east through Iran into India. There is only one record from Abd el Kuri (Fig. 46).	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
0077E3954C3B5D738F43F1D267C9C1E4.taxon	description	Figs 47, 48	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
0077E3954C3B5D738F43F1D267C9C1E4.taxon	distribution	Distribution and occurrence. O. gracilis occurs in North Africa and the Middle East, eastwards through Iran and into India. The ssp. nyuki is confined to the Horn of Africa and Socotra. Its occurrence on Socotra is only known from one collecting event at Hadiboh Plain in 1967.	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
49C4532B4DCE5C0C9FF6167AA048B967.taxon	description	Figs 49, 50, 51, 52, 53	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
49C4532B4DCE5C0C9FF6167AA048B967.taxon	distribution	Distribution and occurrence. Ochrilidia socotrae is endemic to Socotra. This species has only been found on three sites in coastal dunes near the two outermost capes of Socotra, Shuab and Neet in the west and Erisseyl in the east (Fig. 52). The species can be common in suitable habitat.	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
86A646BF3FCA5564B7C4F3042920974F.taxon	description	Figs 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
86A646BF3FCA5564B7C4F3042920974F.taxon	description	Description. Male holotype. Like other species within the genus Oecanthus, it is slender-bodied and fragile (Figs 162, 163). Head: weakly prognathous (Fig. 164 A); head and pronotum with a light mid-line bordered by two thin dark lines (Fig. 164 B); no black postocular marking; scape and pedicel with a small black spot on their ventral face (Fig. 164 A); black dot on the scape sometimes very weak; spot on the pedicel somewhat thickened or callous. Pronotum: as wide as long, sometimes slightly wider than long (Table 8); saddle-shaped with ventral caudal corners of the paranotal lobes strongly curved inwards; hind margin slightly undulated, with bristles (Fig. 164 B). Metanotal gland: metascutum and metascutellum both well-modified and of more or less equal length (Fig. 166); main scutal relief inverted U-shaped with slightly swollen anterior and lateral margins (Fig. 166 a); posteriorly, with two posterad projecting flat processes, both with a tuft of long setal brushes on both sides of their apex; a deep transverse depression situated beneath the two processes; scuto-scutellar suture obtusely trapezoid (Fig. 166 b); main scutellal relief V-shaped, smaller than the scutum (Fig. 166 c), with a U-shaped depression in its anterior face; anterior margin of the scutellum, along the scuto-scutellar suture, with a pair of posterad, hook-like processes, bearing some setae; posterior margin of the scutellum with an obtuse angle; a median scutal tubercle is absent. Right tegmen: veins light; tegmina marked more or less extensively blackish-brown; base of the tegmina dark brown due to the infumation of the cells and margins of the veins; cells bordering the file and the plectrum intensively marked dark brown; chordal area with a large brown spot; cells in the dorsal field thinly margined brown along the veins and variably and locally marked with smooth infumation (Fig. 167 A, C). Stridulatory file: stridulum with 54 teeth, situated on a proximally sharply raised ridge, which gradually descends to the same level as the anal vein towards the plectrum (Fig. 167 C). Hind wings: light-coloured, apex brown, surpassing the tegmina with 2.2 mm. Legs: TI with an oval inner and outer tympanum; TI with an outer, apical, ventral spur; TII with an inner, apical, ventral spur (Fig. 164 E). Fore- and mid-legs with scattered small black spots (Figs 162, 163); FIII with thinly distributed small black spots on the lateral and dorsal outer surface and with black markings on the ventrolateral carinae (Fig. 164 C); TIII with two outer and three inner, dorsal, subapical spurs (Fig. 164 F), serrulated over the entire length, with small, but thick spines on the tibiae’s dorsal margins; serrulation denser in the basal than in the apical part; inner serrulation: no spine before the first subapical spur, 0 spines between the first and second spur, 1 – 2 spines between the second and third spur and 12 – 13 above the third spur; outer serrulation: 2 – 3 spines before the first subapical spur, 3 – 4 spines between the first and second spurs and 13 – 14 spines above the second spur; inner, apical three times shorter than inner, apical, dorsal spur; inner, apical, dorsal spur two times longer than outer, apical, dorsal spur; spurs and spines dark; ventral lobe of the hind knee dorsally lined black (Fig. 165 A). Abdomen: cerci slightly sinuous in both the basal and apical fifth and densely covered with long hairs (Fig. 164 D); subgenital plate with a rounded apex (Fig. 164 C). Genitalia: Pseudepiphallic sclerite is a narrow transverse bridge that is widely U-shaped; the anterior margin is slightly curved in dorsal view. Main lobes (MLPs.) placed on the posterior margin, more or less diamond-shaped in dorsal view, with rounded inner sides and angled outer sides; in lateral view, MLPs angled obliquely up- and backwards, resembling two triangular blades or scoops; inner space between the two main lobes slightly smaller than the width of one lobe at its base. Two widely-rounded, triangular pseudepiphallic apodemes (Ps. Ap.) directing anteriorly. Pseudepiphallic parameres (Ps. P.) much shorter than MLPs., rounded apically and directed inwards. Rami long and slender; arc projecting anteriorly, with two long distal prolongations and two short ectophallic apodemes (Ec. Ap.) (Fig. 168). Colouration: sides of the head yellowish to orange, dorsally orange-brown to brown; eye colour orange-light reddish-brown (in vivo); scape and pedicel orange to orange-brown, the remaining antennomeres blackish brown; tarsi, tibiae and femora light yellow to orange-brown, gradually darkening towards the joints (Figs 162, 163); abdominal tergites largely coloured dark brown with light margins (Figs 162, 163); sternites light; cerci light; subgenital plate mottled brown at its base, rest light yellow. Morphometrics holotype. Body length (anterior margin labrum – apex subgenital plate): 11.7 mm; pronotal length: 1.9 mm; pronotal width: 2.0 mm; right tegmen length: 10.3 mm; width dorsal field right tegmen: 3.6 mm; total width right tegmen: 5.4 mm; cercus length: 4.2 mm; FIII length: 7.1 mm; TIII length: 8.0 mm; stridulatory file length 1.4 mm; stridulatory teeth number 54. Female. Same as male, except for the following characteristics: tegmina dark brown on the dorsal and lateral fields, translucent along the transition between the dorsal and lateral fields; due to light underwings, tegmina appear to be striped (Fig. 172); ovipositor short, apex denticulated; cerci slightly surpassing the apex of the ovipositor (Fig. 165 C); subgenital plate triangular with a rounded apex. Biometrics of holo- and paratypes are shown in Table 8.	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
86A646BF3FCA5564B7C4F3042920974F.taxon	discussion	Discussion. Based on its characteristics, mainly the ventral apical spurs on both TI and TII, O. castaneus sp. nov. (and O. chopardi) might merit assignment to Viphyus or a new genus close to the latter. However, taxonomic changes at this level should preferably be accompanied by a thorough phylogenetic analysis, based on DNA. Therefore, we tentatively describe the species here as a member of Oecanthus and leave the decision about the generic placement of both Oecanthus species from Socotra to a future study.	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
86A646BF3FCA5564B7C4F3042920974F.taxon	etymology	Etymology. Oecanthus castaneus Felix & Bouwman, sp. nov. is named after its warm brown appearance due to a combination of orange and brown hues. This characteristic distinguishes the species immediately from O. chopardi, the other tree cricket species on the island.	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
86A646BF3FCA5564B7C4F3042920974F.taxon	distribution	Distribution and occurrence. Endemic to Socotra. The species occurs throughout the island and is common, possibly less so higher in the mountains (Fig. 169).	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
64F2072F8E8B57A3B49D85E5679088BC.taxon	description	Figs 165, 167, 168, 173, 174, 175, 176, 177	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
64F2072F8E8B57A3B49D85E5679088BC.taxon	distribution	Distribution and occurrence. O. chopardi is endemic to Socotra and is found at several sites in the Hagher and Maaleh Mountains (Fig. 175). Records are few and O. chopardi may well be a scarce species. The labels of the type specimens mention Deneghan, 300 ft (ca. 91 m), while Uvarov (in Uvarov and Popov (1957)) mentions 3000 ft (ca. 914 m) instead, which is on Adho Dimello. Later, Popov (1984) mentioned 300 ft (ca. 91 m). We consider the latter as correct (see Discussion).	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
26EE549FF7A85CD4B3621F2382802DBC.taxon	description	Figs 69, 70, 71	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
26EE549FF7A85CD4B3621F2382802DBC.taxon	distribution	Distribution and occurrence. The species occurs from the Canary Islands and West Africa through Sub-Saharan Africa to Arabia, western Russia and south-western India. On Socotra, it is known to occur on several sites scattered over the island (Fig. 71).	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
50545D936CF35FF894B5642756A0DC7B.taxon	description	Figs 16, 17, 18	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
50545D936CF35FF894B5642756A0DC7B.taxon	description	Description of the male. Smaller than the female; body length: 39 mm; frons 10 mm; antenna length: 18 mm; tegmen length: 26 mm; hind wing length: 23 mm. The apex of the fastigium tapers more sharply and is less rounded than in the female. The hind wing is relatively longer than in the female: it is only 12 % shorter than the tegmen; in females, this is 20 % (Figs 16, 17 A) (Dirsh 1950). The pronotum is malformed, making it indescribable in detail. The subgenital plate is short and conical with a sharp apex. The general colouration is yellowish-green. The tegmina have longitudinal reddish, brownish and white lines. The basal disc of the hind wing is reddish with a tessellate pattern (Fig. 16). Other characteristics are the same as in the female (see Dirsh (1950)).	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
50545D936CF35FF894B5642756A0DC7B.taxon	distribution	Distribution and occurrence. Oxytruxalis ensis is endemic to Socotra and a very scarce species. It is only known from one adult male, two adult females and a nymph found in the mid-elevations in the Hagher massif and on the surrounding limestone plateau (Fig. 18). There are no records after 1967.	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
8179EE54D05B5333BC74CD86B468529E.taxon	description	Figs 208, 209, 210, 211	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
8179EE54D05B5333BC74CD86B468529E.taxon	distribution	Distribution and occurrence. It is a widespread endemic to Socotra (Fig. 210), locally common in well-vegetated habitats, for example, Wadi Ayhaft, but also occurring in more open vegetation.	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
CF9E1ECCB729521DB6F4FC0F1461EF2F.taxon	description	Figs 130, 131	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
CF9E1ECCB729521DB6F4FC0F1461EF2F.taxon	distribution	Distribution and occurrence. P. subpustulatus is widely distributed in Africa south of the Sahara, Madagascar, the Comores and Socotra (Devriese et al. 2023). On Socotra, it is common, but because it prefers moist habitats, it is mainly restricted to the eastern half of Socotra (Fig. 131).	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
696AE5FAC3C1538EB0C2676B8B745FDD.taxon	description	Figs 213, 214, 215	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
696AE5FAC3C1538EB0C2676B8B745FDD.taxon	distribution	Distribution and occurrence. Phaneroptera sparsa occurs in most of Africa south of the Sahara, Madagascar and Socotra, extending northwest to Morocco and the Canary Islands and in the northeast to Arabia and eastern Turkey (Ragge 1980; Popov 1981). On Socotra, the species is widespread, occurring from sea level at Hadiboh, up into the Hagher and on the surrounding limestone plateaus. It is also present in the western mountains (Fig. 215).	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
C6C1D60BBFD354068BBCD0FE00046126.taxon	description	Figs 216, 217, 218	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
C6C1D60BBFD354068BBCD0FE00046126.taxon	distribution	Distribution and occurrence. Endemic to Socotra. Only three records from the well-wooded slopes of the Hagher massif are known (Fig. 218). Due to its arboreal habitat, the species is undoubtedly under-recorded. The two specimens collected in 2014 were found after foliage beating (A. Carapezza in litt.). The coordinates of the 2014 record given by Massa (2017) refer to the entrance of Wadi Ayhaft and are less precise. The coordinates mentioned above are of the estimated collecting site in Wadi Ayhaft (A. Carapezza and B. Massa, in litt.).	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
37423CA63B5F5E948462BD5852A0591E.taxon	description	Figs 102, 103	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
37423CA63B5F5E948462BD5852A0591E.taxon	distribution	Distribution and occurrence. Endemic to Socotra. P. dioscoridus occurs in the Hagher and its vast surroundings, from sea level near Hadiboh to high in the mountains at Adho Dimello (Fig. 103). It has also been found at Wadi Zerig on Dixam Plateau. The number of records is lower than Phaulotypus insularis, which occurs in more or less the same habitat. For remarks on Guichard’s collecting site on Mt. Shihali on 20 April 1967, see the species account of Dioscoridus depressus.	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
BAE95DE3FBB450089FFA4CC31C948F8F.taxon	description	Figs 101, 104, 105, 106	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
BAE95DE3FBB450089FFA4CC31C948F8F.taxon	distribution	Distribution and occurrence. Endemic to Socotra. The species is restricted to the highest parts of the Hagher mountains (above 900 m a. s. l.) (Fig. 106). It is only known from Adho Dimello (type location), the lower slopes of Mt. Shihali and Mt. Skand. In 2010, some tens of specimens were easily found at Adho Dimello, so it is not considered to be uncommon there. For remarks on Guichard’s collecting site on Mt. Shihali on 20 April 1967, see the species account of Dioscoridus depressus.	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
500FCABEB719559887953FBB8F7A49C2.taxon	description	Figs 107, 108, 109	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
500FCABEB719559887953FBB8F7A49C2.taxon	distribution	Distribution and occurrence. Phaulotypus insularis is a widespread and common endemic to Socotra (Fig. 109). It can be found wherever there are shrubs.	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
A74E8F6F9F9550179820AA6A18B2CDAF.taxon	description	Figs 110, 111, 112, 113	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
A74E8F6F9F9550179820AA6A18B2CDAF.taxon	distribution	Distribution and occurrence. P. socotranus is a rather scarce Socotran endemic. The species is only recorded in and around the Hagher and on the eastern limestone plateaus (Fig. 112). It is probably under-recorded because of its arboreal lifestyle.	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
EDCDF8138970578C930BA70BB6217B4D.taxon	description	Figs 118, 119, 120, 121, 122	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
EDCDF8138970578C930BA70BB6217B4D.taxon	distribution	Distribution and occurrence. Physemophorus sokotranus is endemic to Socotra. It is considered common by Burr (1903) and Popov (in Uvarov and Popov (1957)). It is widespread in the island’s eastern half and common in the Hagher and locally on Dixam (e. g. Wadi Zerig). There are few records from the east part of the island, Homhil and Hamadero. One record is from Noged Plain on the southern shore and there is currently one western record from near Qalansiyah (Fig. 120).	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
199BCA95EE3A5851B37EF5CF68B73B8E.taxon	description	Fig. 123	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
199BCA95EE3A5851B37EF5CF68B73B8E.taxon	distribution	Distribution and occurrence. Endemic to Abd el Kuri Is. and known from two sites, one on the northern shore of the island and one on the north-western slope of Jebel Saleh (Fig. 123). It is probably more widespread and not uncommon on the island, although Wranik did not collect this taxon during his visits.	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
EF76BF8B0423534A910BF9FB7C2A4719.taxon	description	Figs 124, 125, 126	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
EF76BF8B0423534A910BF9FB7C2A4719.taxon	distribution	Distribution and occurrence. The distribution area of P. tereticornis, according to Hsiung and Kevan (1975), comprises the Canary Islands, Cape Verde, northern Africa, Socotra and Southwest Asia. According to Defaut (2017), P. tereticornis tentatively occurs in Africa and the Middle East. On Socotra, Popov found P. tereticornis widespread and uncommon in all drier parts (Popov in Uvarov and Popov (1957)). We found the species in 2009 and 2010 everywhere on the island at lower elevations (Fig. 125).	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
F6EF591C65A5591D8F7BC2E6FA7E741B.taxon	description	Figs 203, 204, 205, 206, 207	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
F6EF591C65A5591D8F7BC2E6FA7E741B.taxon	distribution	Distribution and occurrence. R. basiguttata is only known from its type localities in Cameroon and Ghana (Naskrecki 2009). On Socotra, Ruspolia aff. R. basiguttata is restricted to the Hagher and Dixam Plateau (Fig. 205).	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
580CE78CFFFD5B539E8F909A09114651.taxon	description	Figs 32, 33	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
580CE78CFFFD5B539E8F909A09114651.taxon	distribution	Distribution and occurrence. Schistocerca gregaria occurs in Africa and Southwest Asia (Hemp and Rowell 2020), including Socotra (Fig. 32). Both the solitary and swarming phases occur on the island. Records of solitary specimens are relatively scarce. Orthoptera expeditions before 1953 did not record the species (Uvarov and Popov 1957). When Popov worked on the island in 1953, the species was mainly in the gregarious phase. He recorded only two adults of the solitary phase at Noged, the coastal plane in the south. The Oxford expedition in 1956 collected only one specimen (Popov 1959). Wranik recorded a handful of specimens during his trips (Wranik 1998). In 2009, we only recorded (and collected) one specimen. In 2010, we only did one sight record at Erisseyl (Fig. 33).	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
4F88A7DE0A4F530196ABF87FA597AE54.taxon	description	Figs 72, 73, 74, 75	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
4F88A7DE0A4F530196ABF87FA597AE54.taxon	distribution	Distribution and occurrence. Scintharista forbesii is endemic to Socotra, where it is widespread and locally common (Fig. 74). It is found mainly in the Hagher and limestone plateaus, but also on sea-level plains. A record from Abd el Kuri, collected in January 1899 by Simony, mentioned by Kraus (1907), is not referred to in subsequent literature. This specimen could not be found in the collection in Vienna (H. Bruckner, NMW in litt.). The record has been omitted from the map in Fig. 74.	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
338A4DFD9F805F0397DC994DBA851088.taxon	description	Figs 76, 77	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
338A4DFD9F805F0397DC994DBA851088.taxon	distribution	Distribution and occurrence. S. notabilis is widespread in Africa and Southwest Asia. It occurs on Abd el Kuri and potentially on Socotra. The specimen collected by Wranik at Hadiboh, Socotra, in 1984 is the only record known from the island. As S. notabilis is a rather conspicuous species with red or yellow wings, it is remarkable that it has not been recorded during other explorations on Socotra. Therefore, the sole record at Hadiboh, the island’s main town, may represent a stowaway, vagrant or a case of mislabelling. Natural vagrants, if occurring, could be searched for on the western coastline of Socotra. Three specimens collected by Guichard in 1967 on Socotra (Hadiboh Plain, Hamadero, Kalansiya), placed in a draw between S. notabilis in the collection in NMHUK, are identified as S. forbesii, based on the darker colour, especially the distal half of the tegmina. The wings are closed, so it is difficult to identify the wing colour. Guichard (1992) only mentioned Abd el Kuri as a collecting site of S. notabilis.	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
AA56D9A101F85A5A95598B7C79A5557B.taxon	description	Figs 178, 179	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
AA56D9A101F85A5A95598B7C79A5557B.taxon	distribution	Distribution and occurrence. Endemic to Socotra. Only known with certainty from the type locality (Fig. 179). One juvenile of possibly the same species, depicted in Cheung and DeVantier (2006), was collected in 2004 in Dilhaile Cave, Dixam Plateau, four kilometres from the type locality (K. Van Damme, in litt.). The two sites are located in strongly karstified limestone, which would allow the species to disperse by a subterranean network. In 2009, we visited some other caves: Hoq Cave (12.5877 ° N, 54.3545 ° E) at Momi Plateau and Dejub Cave (12.3849 ° N, 54.0156 ° E) on the southern edge of Dixam, but no crickets were found (Desutter-Grandcolas and Felix 2012).	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
86B8448865B55772ACE3D3480B4A1EA1.taxon	description	Figs 114, 115, 116	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
86B8448865B55772ACE3D3480B4A1EA1.taxon	distribution	Distribution and occurrence. Socotrella monstrosa is endemic to Socotra and only found in the Hagher Mountains (Fig. 116). The species seems to occur in very low densities. Popov (in Uvarov and Popov (1957)) stated that, after finding his specimen, he looked for several hours on two occasions without seeing another one. Guichard erroneously named the wadi flowing south from Adho Dimello Wadi Dajoj (Guichard 1967). According to the map of the Royal Geographical Society (1978), this wadi is called Wadi Darho, as also stated by Bezdĕk et al. (2012). Wadi Dajoj [Dajog] does exist, but is situated much further east (Royal Geographical Society 1978; Bezdĕk et al. 2012).	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
C240612844F95A66B052C09993E27AF5.taxon	description	Fig. 78	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
C240612844F95A66B052C09993E27AF5.taxon	distribution	Distribution and occurrence. The type locality of Sphingonotus (Neosphingonotus) canariensis is considered Cape Verde (Huseman 2020). S. canariensis is widespread in northern Africa, reaching Kenya in the south and parts of the Arabian Peninsula (Huseman 2020). On Socotra, the taxon is apparently rare (or under-recorded) and only collected on two sites in 1953 by Popov and on one site by us in 2010 (Fig. 78).	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
BE9AB932052D5059AFF226AC166B9DF4.taxon	description	Figs 79, 80, 81	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
BE9AB932052D5059AFF226AC166B9DF4.taxon	distribution	Distribution and occurrence. The type locality of Sphingonotus (P.) turkanae is Lake Turkana in Kenya. The species is restricted to eastern Africa (Ethiopia, Somalia, Kenya, Tanzania) and Yemen, including Socotra (Fig. 80) (Husemann et al. 2011). Husemann (2020) mentioned only Ethiopia, Tanzania and Kenya.	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
54B7C5B3A62D527DBE4DBD3E5ADF30CF.taxon	description	Figs 82, 83, 84, 85, 86, 87	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
54B7C5B3A62D527DBE4DBD3E5ADF30CF.taxon	distribution	Distribution and occurrence. Sphingonotus (S.) albipennis is endemic to Abd el Kuri Is (Fig. 85). Mistshenko (1937) erroneously mentioned the species to occur on Socotra. A rough idea of where Simony and Forbes and Ogilvie-Grant collected S. albipennis on Abd el Kuri in 1898 and 1899 can be determined from Rebel (1907) and Forbes (1903), respectively. According to Rebel (1907), the collecting events by Simony on Abd el Kuri were primarily on Jebel Saleh and Cimali. These two mountains are only accessible from the northern plains and slopes, their southern slopes being steep, inaccessible cliffs. In Forbes (1903), it can be read that, on 5 Dec 1898, the collecting party went up Jebel Saleh through its north-western slope, departing from base camp at a sandy beach at the foot of the mountain southwest of it, known as Bandar Saleh. The specimens collected on 22 Feb 1899 were also encountered very close to Bandar Saleh (Forbes 1903). During a trip in 2022, several individuals were observed mainly on the plain north of Jebel Saleh and the adjacent northern slopes (P. van der Wielen, in litt.). Based on this information, the plains near Jebel Saleh and its slopes may have been the only known collecting sites of this Abd el Kuri endemic over the years. The exact collecting sites of Wranik’s specimens are unknown to us.	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
05D8011C81EB51ADB268635EE3053A0F.taxon	description	Fig. 88	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
05D8011C81EB51ADB268635EE3053A0F.taxon	distribution	Distribution and occurrence. Sphingonotus balteatus is found in Egypt and Somalia, eastwards, through Arabia, into Pakistan and India (Husemann 2020). Burr (1903) mentioned a specimen of S. savignyi collected by the Forbes expedition on Abd el Kuri on 5 December 1898. Uvarov (in Uvarov and Popov (1957)) was unable to trace that specimen in the London and the Liverpool collections and expected Burr to have been misled by a dark specimen of S. albipennis. We found one specimen of Sphingonotus (Sphingonotus) balteatus between congeners in a drawer in the NHMUK, labelled as savigny bearing the label “ Sokotra 1900 - 234 ” (Fig. 88). This label indicates it was collected during Forbes’ expedition to Socotra and Abd el Kuri in 1889 and 1899 and it does not mean the specimen was collected on Socotra itself. We conclude this must be the specimen collected by Forbes and Ogilivie-Grant on Abd el Kuri, mentioned by Burr (1903). Since S. balteatus differs markedly from S. savignyi, we cannot explain Burr’s misidentification. In the Socotra Archipelago, it has only been found once on Abd el Kuri Is. (Fig. 89). Since the specimen was collected on 5 Dec 1898, the day the party went up Jebel Saleh (Forbes 1903), it is assumed that the collecting site is the same as that of S. albipennis collected that day (see species account S. albipennis).	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
AA6EDF0CCE345A8B9CB1A588E383A5F2.taxon	description	Figs 90, 91, 92, 93	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
AA6EDF0CCE345A8B9CB1A588E383A5F2.taxon	distribution	Distribution and occurrence. The species is endemic to the Socotra Archipelago and occurs on Socotra and Samha Is. It is widespread and locally common on Socotra, especially on the coastal plains below 70 m a. s. l. (Fig. 91). There are exceptional records up to 700 m a. s. l. (see Popov in Uvarov and Popov (1957)), as in Wadi Dineghen in 1956 and Di Hashus and Betin in 2008. In 2009, it was common at Ditwah Lagoon and on Noged Plain.	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
FED6BFC186E15A96BEE68E2BC21412A3.taxon	description	Figs 94, 95, 96, 97, 98, 99	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
FED6BFC186E15A96BEE68E2BC21412A3.taxon	distribution	Distribution and occurrence. The species occurs on Socotra and Samha Is. and is endemic to the Socotra Archipelago. It is widespread and common from the plains to the higher limestone plateaus. It is absent from the higher regions in the Hagher (Fig. 96).	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
0DC75291794B50969F9FF7224A470C9D.taxon	description	Fig. 100	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
0DC75291794B50969F9FF7224A470C9D.taxon	distribution	Distribution and occurrence. It is widespread in northern Africa, southern Europe, Arabia and parts of Asia (Husemann 2020; Dey et al. 2021). It was newly reported for Socotra based on one specimen collected in 2010 (Dey et al. 2021). We found one specimen in Wranik’s collection from Samha, 1999 (Fig. 100).	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
8A0E01B424B25C9FB9C8C573EC4A5BD1.taxon	description	Figs 54, 55, 56, 57	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
8A0E01B424B25C9FB9C8C573EC4A5BD1.taxon	distribution	Distribution and occurrence. It is an endemic species to Socotra and widely distributed and common, especially on the plains (Fig. 56). In 2009, it was abundant at Taaqs, Ba’a and Qeysoh.	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
C84F5327C76F5742BD1CA808BCDBC27E.taxon	description	Figs 180, 181	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
C84F5327C76F5742BD1CA808BCDBC27E.taxon	distribution	Distribution and occurrence. It is a widespread species in Africa, southern Europe, Asia and Arabia. Massa (2009) recorded it on Socotra. The only records are from Zerig and Zemhom, south of the Hagher (Fig. 181). The presence is most certainly overlooked and the species is probably more widely distributed in suitable habitats.	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
1F7AC34EC0365529968DE0345E9E701D.taxon	description	Figs 19, 20	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
1F7AC34EC0365529968DE0345E9E701D.taxon	distribution	Distribution and occurrence. The species is endemic to Socotra. It is relatively widespread in the Hagher, the surrounding limestone plateaus and the lower plains, but is uncommon (Fig. 20).	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
A25EB339904F54B58A530C2F7DE06B0B.taxon	description	Figs 127, 128, 129	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
A25EB339904F54B58A530C2F7DE06B0B.taxon	distribution	Distribution and occurrence. Xenephias is endemic to Socotra and only known from the highest elevations in the Hagher at Adho Dimello, the lower slopes of Mt. Shihali and Mt. Skand (Fig. 129). In Mar / Apr 2022, Kay van Damme and Francesca Pella (in litt.) observed a nymph at Mt. Skand (Fig. 127). For remarks on Guichard’s collecting site on Mt. Shihali on 20 April 1967, see the species account of Dioscoridus depressus.	en	Felix, Rob, Bouwman, Jaap, Odé, Baudewijn, Ketelaar, Robert, Pham, Duc Minh, Bailey, James (2025): The grasshoppers and crickets (Orthoptera) of the Socotra Archipelago (Yemen): a comprehensive overview and a description of a new Oecanthus Tree Cricket (Oecanthidae). Contributions to Entomology 75 (1): 21-166, DOI: 10.3897/contrib.entomol.75.e144389
