Trigava recurva (Melichar, 1912)

Song, Zhi-Shun, O'Brien, Lois B., Malenovsky, Igor, Deckert, Juergen & Bartlett, Charles R., 2024, Revision of the Neotropical genus Trigava O'Brien, 1999 (Hemiptera, Fulgoromorpha, Dictyopharidae, Nersiini), with descriptions of two new species from Peru and Brazil, ZooKeys 1188, pp. 27-45 : 27

Trigava recurva (Melichar, 1912)

Figs 1F , 2F, H , 7A-J

Igava recurva Melichar, 1912: 49, pl. II, figs 8, 10.

Igava recurva Melichar: Metcalf (1946): 39.

Trigava recurva (Melichar): O’Brien (1999): 60.

Type locality.

Bolivia, La Paz Department, Mapiri.

Emended description.

Measurements (in mm; 1♂, 1♀). Body length from apex of head to tip of tegmina: ♂ 13.8, ♀ 14.1; head length (includes: apex of cephalic process to constricted and curved part + from curved part to base of eyes): ♂♀ 0.6+(0.9-1.0); head width including eyes: ♂ 1.7, ♀ 1.6; tegmen length: ♂ 11.4, ♀ 11.7.

Coloration. Head stramineous green, lateral carinae of vertex reddish brown, lateral and intermediate carinae of frons in front of eyes black to reddish brown, lateral areas in front of eyes green. Pronotum and mesonotum stramineous green, upper lateral carinae of pronotum green. Tegmina and hindwings with membrane hyaline, costal margin black to dark brown, veins green to greenish yellow, pterostigmal area more or less greenish ochraceous. Legs yellowish brown, base, apex and apical spines of tibiae fuscous. Abdomen dorsally and ventrally greenish ochraceous.

Structure. Head with cephalic process relatively long, in lateral view (Fig. 7B ), curved upward about 60° in front of eyes. Vertex (Fig. 7A ) broad, with ratio of length at midline to width between eyes (1.6-1.7):1. Frons (Fig. 7C ) flat, relatively broad, with ratio of length at midline to maximum width 2.6:1.

Male genitalia. Pygofer in lateral view (Fig. 7E ) with ratio of ventral to dorsal width about 2.1:1; posterior margin broadly angular near middle. Gonostyles (Fig. 7F ) large and broad, dorsal process elongate, triangular, acute apically, more or less incurved and directed dorsoanteriad; hook-like process situated sub-basally, slightly below dorsal process, curved apicad (Fig. 7G ). Aedeagus (Fig. 7H-J ) large and stout, endosomal processes curved dorsoanteriad; phallobase sclerotized and pigmented at lateral sides, membranous and slightly inflated dorsally and ventrally: dorsal lobes small, U-shaped at apex, directed posteriad; a pair of lateral lobes large and elongate, base rounded and expanded laterad, remaining thumb-like, subapex with a large long spine, directed posteriad; ventral lobes large, nearly cross-shaped in ventral view (Fig. 7J ), base protruded anteriad, middle expanded laterad, with a large and stout spine, apex produced in a large thumb-like lobe, without spine, directed posteriad. Segment X (Fig. 7D, E ), in dorsal view, lateral margins more or less convex near middle, with ratio of length to width near middle about 1.8:1.

Female genitalia. As in generic description.

Type material examined.

Lectotype (here designated), ♂, (1) "Bolivia, Mapiri"; (2) " Trigava recurva [ Melichar’s handwriting], det. Melichar"; (3) “Typus” [dark red label]; (4) "Collectio Dr. L. Melichar, Moravské museum Brno"; (5) "Syntypus, Igava recurva sp.n. Melichar, 1912, ♂ [P. Lauterer’s handwriting], P. Lauterer det 1991"; (6) "Syn- typus" [red label]; (7) "Invent. č. 4942/Ent., Mor. muzeum, Brno"; (8) " Trigava recurva (Melichar) [Zhi-Shun Song’s handwriting] det. Z.S. Song 2014"; (9) "Lectotypus ♂, Igava recurva Melichar, 1912, desig. by Z. S. Song & I. Malenovský, 2023" [newly added red label] (MMBC). Paralectotype, 1♀, (1) "Bolivia N, Yungas, Garlepp c."; (2) "Coll. A. Jacobi, 1912 - 3" [green label]; (3) " Enhydria recurva M " [handwriting]; (4) "Paralectotypus ♀, Igava recurva Melichar, 1912, labelled by I. Malenovský, 2023" [newly added red label] (MTD).

Distribution.

Northwestern Bolivia, southern Peru ( Melichar 1912).

Remarks.

Igava recurva Melichar was described based on an unspecified number of specimens from "Peru, Pachitea, Marcapata; Bolivien, Mapiri, Yungas (Garlepp) (Mus. Budapest und Dresden)" ( Melichar 1912). One male syntype from Bolivia, Mapiri preserved in Melichar’s personal collection in MMBC is here used for the redescription of the species and designated as the lectotype according to Article 74 of ICZN (1999) to stabilize the nomenclature. Another conspecific female from Bolivia with collecting data matching the original description has been located by us in MTD and was labelled as a paralectotype. Specimens from Peru have not been examined by us.

Figures

Figure 1. Habitus of Trigava species, dorsal view A T. brachycephala (Melichar), lectotype, male B T. brachycephala (Melichar), male C T. obrieni sp. nov., holotype, male D T. obrieni sp. nov., paratype, female E T. peruensis sp. nov., holotype, male F T. recurva (Melichar), lectotype, male.

Figure 2. Habitus of Trigava species, lateral view A T. brachycephala (Melichar), lectotype, male B T. brachycephala (Melichar), male C T. obrieni sp. nov., holotype, male D T. obrieni sp. nov., paratype, female E T. peruensis sp. nov., holotype, male F T. recurva (Melichar), lectotype, male G right tegmen of T. brachycephala H right tegmen of T. recurva.

Figure 7. Trigava recurva (Melichar), lectotype, male A head and thorax, dorsal view B same, lateral view C same, ventral view D pygofer, and segment X, dorsal view E pygofer, gonostyles, aedeagus and segment X, right lateral view F pygofer and gonostyles, ventral view G left gonostyle, lateral view H aedeagus, dorsal view I aedeagus, lateral view J aedeagus, ventral view.