Teleogryllus rohinae Jaiswara & Jain, 2021

Jaiswara, Ranjana, Desutter-Grandcolas, Laure & Jain, Manjari, 2021, Taxonomic revision of Teleogryllus mitratus (Burmeister, 1838) and T. occipitalis (Serville, 1838) in India, withthe description of Teleogryllus rohinae Jaiswara & Jain sp. nov. and a key for Teleogryllus species from India (Orthoptera: Gryllidae), Zootaxa 5016 (1), pp. 81-106 : 91-93

publication ID	https://doi.org/10.11646/zootaxa.5016.1.3
publication LSID	lsid:zoobank.org:pub:F0DA73A8-E6EE-4A64-873C-964D8F25670B
DOI	https://doi.org/10.5281/zenodo.5221838
persistent identifier	https://treatment.plazi.org/id/03A37A5A-FF8F-FFD8-FF5E-FC03FE2D3C92
treatment provided by	Plazi (2021-08-19 12:23:13, last updated 2023-11-04 03:57:11)
scientific name	Teleogryllus rohinae Jaiswara & Jain
status	sp. nov.

Treatment

Teleogryllus rohinae Jaiswara & Jain View in CoL , sp. nov.

Figures 1 View FIGURE 1 , 4A–H View FIGURE 4 , 5E View FIGURE 5 , 6D View FIGURE 6 , 7E View FIGURE 7 , 8C View FIGURE 8 , 9D View FIGURE 9 , 10I–L View FIGURE 10 , 11E–F View FIGURE 11 & 12 View FIGURE 12 ; Table 3

Type locality: India, Kerala, Nileshwar, Bekal Club, 5km from Nileshwar Railway Station.

Type material: Holotype — INDIA: Kerala, Bekal Club, 8km from Nileshwar Railway Station , 1 male ( MJO _ 1177), 7m asl, 12° 16′ 20. 3′′ N 75° 6′ 47.4′′ E, 24.i.2017, R. Jaiswara and M. Jain, ZSI Kolkata. GoogleMaps

Allotype — INDIA: Kerala, Bekal Club, 8km from Nileshwar Railway Station , 1 female ( MJO _1169), 7m asl, 12° 16′ 20. 3′′ N 75° 6′ 47. 4′′ E, 24.i.2017, R. Jaiswara and M. Jain, ZSI Kolkata. GoogleMaps

Paratypes — INDIA: Kerala, Bekal Club, 12° 16′ 20.3′′ N 75° 6′ 47.4′′ E, 7m asl, 8km from Nileshwar Railway Station , 24.i.2017, 5 male ( MJO _1175–1179) and 5 female ( MJO _1159–1163), collected by R. Jaiswara and M. Jain, thereafter deposited in IISER Mohali GoogleMaps .

Distribution: Currently known only from the type locality.

Etymology: This new species is named in honour of Professor Rohini Balakrishnan, Centre for Ecological Sciences, Indian Institute of Science, Bangalore, for introducing RJ and MJ to the cricket model system and in recognition of her significant contribution to the understanding of the behaviour and ecology of Indian crickets. Name in apposition—gender feminine.

Habitat: T. rohinae Jaiswara & Jain sp. nov. was primarily found in Cucurbitaceae plantations and sometimes on open grassland areas having moist soil.

Diagnosis: Very similar to T. occipitalis ( Serville, 1838) in external morphology, but mainly differing in male ( Fig. 10I–K View FIGURE 10 ) and female ( Fig. 11E–F View FIGURE 11 ) genitalia structures. T. rohinae Jaiswara & Jain , sp. nov. also resembles T. emma ( Ohmachi & Matsuura, 1951) . Still, according to the morphological descriptions of T. emma by Libin et al. (2015), it differs mainly in the male genitalia (female genitalia not known for T. emma ). Male. FW stridulatory apparatus: stridulatory file with 235 to 252 teeth (mean 242, n=3); harp with 4–6 usually (occasionally 3).

Description: In addition to the characters of the genus: medium sized cricket very similar to T. occipitalis . Legs. TIII with 5–6 inner and 6–7 outer sub-apical spurs; basitarsomeres III with 3–4 inner and 5–7 outer spines.

Color. Body, head and pronotum dark brown ( Fig. 3A–B View FIGURE 3 , 5E View FIGURE 5 & 6D View FIGURE 6 ). Inner margins of eyes with a thick yellow band ( Fig. 10L View FIGURE 10 ), sometimes wide enough to make vertex look yellowish.

Male. FW covering the epiproct fully or slightly longer ( Fig. 5E View FIGURE 5 ), HW always longer than abdomen; harp with 3–4 regularly spaced oblique veins with a horizontal middle part (sometimes 1–2 faint veins at the angle of 1 st anal vein) ( Fig. 7E View FIGURE 7 ). Stridulatory file with 235 to 252 teeth (mean 242, n=3); teeth on the stridulatory vein as on Fig. 8C View FIGURE 8 . Mirror longer than wide; apical field with 4–5 cell alignments; lateral field with 12–13 veins ( Fig. 7E View FIGURE 7 ).

Male genitalia. Pseudepiphallic sclerite rather square-shaped in dorsal view, posterior margin slightly pointed from the middle, vertex rounded and smooth with convex lateral margins and almost at the level of median structure ( Fig. 10I View FIGURE 10 ). In lateral view: pseudepiphallic sclerite very similar to T. occipitalis and T. emma ; pseudepiphallic apodeme as wide as its base ( Fig. 10J–K View FIGURE 10 ).

Female. Body size slightly bigger than males. FWs overlapping 2/3 rd of its width, length restricted up to 7 th abdominal tergite or extended slightly beyond epiproct; dorsal field with 11 diagonally parallel longitudinal veins; lateral field with 11–13 veins ( Fig. 9D View FIGURE 9 ). HWs very long extended beyond the abdomen ( Fig. 6D View FIGURE 6 ).

Female genitalia. Copulatory organ sharply tapering anteroposterior and sclerotized posteriorly ( Fig. 11E, F View FIGURE 11 ).

Acoustic signal: Calls of T. rohinae consist of two kinds of chirps (long and short) interspersed with each other ( Fig. 12A View FIGURE 12 ). The short chirps are 0.402 ± 0.024s while the longer chirps are more variable with a chirp duration of 0.677 ± 0.331s (mean SD). The short chirps consist of 6.35 0.93 syllables, while the longer chirps consist of 19.5 ± 8.6 syllables per chirp (mean ±SD). While T. rohinae Jaiswara & Jain s p. nov. and T. emma have similar call patterns with long and short calls, they vary in the number of syllables per chirp. Further, the dominant frequency for T. emma has been reported to be 3.7 kHz ( Lu et al. 2018), whereas, for T. rohinae , we determined it to be at 5.3 ± 0.16 kHz ( Fig. 12B View FIGURE 12 ).

References

Libin, M. A., Zhuqing, H. E. & Yalin, Z. (2015) Taxonomy of Chinese black field crickets Teleogryllus Chopard (Grylloidae, Gryllinae) with new distribution record of the exotic species Teleogryllus commodus (Walker). Journal of Shanxi Normal University (Natural Science Edition), 43 (3), 57 - 63.

Lu, H., Wang, X. - Y., Wang, H. - Q., Li, K. & He, Z. - Q. (2018) A taxonomic study of genus Teleogryllus from East Asia (Insecta: Orthoptera: Gryllidae). Journal of Asia-Pacific Entomology, 21, 667 - 675. https: // doi. org / 10.1016 / j. aspen. 2018.03.011

Ohmachi & Matsuura, I. (1951) On the Japanese large field cricket and allied species [Japanese with English summary]: Bulletin of the Faculty of Agriculture, Mie University, 2, 63 - 72.

Serville, A. J. G. (1838) Histoire naturelle des Insectes. Orthopteres. Librairie encyclopedique de Roret, Paris, xviii + 776 + 14 pp.

Figures

FIGURE 1. Map showing 12 Teleogryllus species present in India with their type localities. No specific type locality available for T. gracilipes and longipennis, indicated in the centre of India. Sampling sites of T. mitratus (Burmeister, 1838) and occipitalis (Serville, 1838) in India are shown in abbreviations. T. bicoloripes has been described from Burma by Chopard (1969), but recorded in India by Biswas et al. (1975) (see Vasanth 1993). Map downloaded from Natural Earth website and designed using QGIS Version 3.18.1 with GRASS 7.8.5.

FIGURE 3. External morphological features of Teleogryllus occipitalis (Serville, 1838): (A–B) dorsal and lateral view of head and pronotum, (C) articles of maxillary palpi, (D–E) dorsal and lateral view of male sub-genital plate, (F) male supra-anal plate, (G) female sub-genital plate and (H) apex of ovipositor. Scale 2mm.

FIGURE 4. External morphological features of Teleogryllus rohinae Jaiswara & Jain, sp. nov.: (A–B) dorsal and lateral view of head and pronotum, (C) articles of maxillary palpi, (D–E) dorsal and lateral view of male sub-genital plate, (F) male supra-anal plate, (G) female sub-genital plate and (H) apex of ovipositor. Scale 2mm.

FIGURE 5. Males of Teleogryllus mitratus collected from (A) IISERM, Punjab (B) Chandan Chauki, Uttar Pradesh and (C) Kadari, Karanatka; T. occipitalis (D) from Bansinagar, Uttar Pradesh and T. rohinae Jaiswara & Jain, sp. nov. (E) from Kasargod, Kerala. Scale 2cm.

FIGURE 6. Females of Teleogryllus mitratus collected from (A) IISERM, Punjab and (B) Kadari, Karnataka; T. occipitalis from (C) Bansinagar, Uttar Pradesh and T. rohinae Jaiswara & Jain, sp. nov. (D) from Kasargod, Kerala. Scale 2cm.

FIGURE 7. Forewings of Teleogryllus mitratus males collected from (A) IISERM, Punjab, (B) Kadari, Karnataka, (C) Chandan Chauki, Uttar Pradesh; T.occipitalis (D) from Bansinagar, Uttar Pradesh and T. rohinae Jaiswara & Jain, sp. nov. (E) from Kasargod, Kerala. Scale 2mm.

FIGURE 8. Scanning Electron Microscope images of stridulatory teeth present on ventral side of 1st anal vein of (A) Teleogryllus mitratus, (B) T. occipitalis and (C) T. rohinae Jaiswara & Jain, sp. nov.

FIGURE 9. Forewings of Teleogryllus mitratus females collected from (A) IISERM, Punjab, (B) Kadari, Karnataka; T. occipitalis (C) from Bansinagar, Uttar Pradesh and T. rohinae Jaiswara & Jain, sp. nov. (D) from Kasargod, Kerala. Scale 2mm.

FIGURE 10. Teleogryllus male genitalia in dorsal, lateral and ventral views and front face image: (A–D) T. mitratus, (E–H) T. occipitalis and (I–L) T. rohinae Jaiswara & Jain, sp. nov. Scale 500 μm.

FIGURE 11. Teleogryllus female genitalia in dorsal (A, C, E) and ventral (B, D, F) views: (A–B) T. mitratus, (C–D) T. occipitalis and (E–F) T. rohinae Jaiswara & Jain, sp. nov. Scale 200 μm.