Pteronemobius osuviridis He & Ma, 2022

He, Zhixin, Wang, Ning, Huang, Huateng & Ma, Libin, 2022, Two new species of ground crickets (Orthoptera: Trigonidiidae; Nemobiinae) from China, Zootaxa 5092 (4), pp. 473-479 : 476-477

Pteronemobius osuviridis He & Ma , sp. nov. fl尾异n'ḋ

Figs. 1 , 3C–D , 4D–F , 5

Holotype. China: Male, Yunnan, Lincang , Linxiang County, Datian Village , 16.VIII.2021, Zhixin He, Ning Wang & Wei Yuan coll. Paratypes. 4 males and 4 females, the same data as holotype ( SNNU) .

Description. Male ( Figs 2C , 4A ). Body size medium. Head round, slightly wider than pronotum. Rostrum approximately equal to antennal scape in width. Ocelli oval-like, median ocellus smallest. The apical joint of maxillary palpi longer than the third one, and it depressed, widened and with rounded apex; apical joint of labial palpi rod-like, longer than remaining sections, depressed and widened. Pronotum transverse, bearing bristles. Anterior and posterior margin straight, posterior margin wider than the anterior, both lateral edges slightly concaved in the middle. Tegmen reaching 7th abdominal segment, bearing one oblique vein and three chord veins. Dividing vein longitudinally separates the mirror as two cells. Apical region degraded. The Fore tibia only possesses a long oval-like external tympanum. Hind tibia bearing four dorsal spurs and three apical spurs on each side.

Genitalia ( Figs. 4D–F ). Epiphallus large and dorsally broad, with apical margin broadly and medially concaved and armed with short lateral lobes. Ectoparamere clip-like (laterally viewed) and conspicuously shorter than epiphallus. In lateral view, ectoparamere aremedwith similar upper and lower branches and the upper one significantly and proximally expanded.

Female ( Figs 3D , 5B ). Resembles male. Body size slightly smaller than male. Tegmen short, bearing five regular veins on the dorsal field. Ovipositor is sword-like and slightly shorter than cercus.

Coloration. Body yellowish-brown. Four dark longitudinal stripes at the dorsal area of head. Anterior half of the abdomen colored dark brown. The apex of the hind femur bears small dark spots on two sides. The basal part of cercus greenish.

Measurements. Male (n=5). BL 6.43±1.43, PL 1.42±0.46, TL 3.75±0.97, HFL 4.69±0.99; Female (n=4). BL 6.03±1.45, PL 1.49±0.31, TL 2.93±0.76, OL 4.10±0.66.

Etymology. The name refers to the greenish color of the male's cercus.

Distribution ( Fig. 1 ). China (Yunnan).

Remarks. This species is very similar to Pteronemobius nitidus ( Bolívar, 1901) in appearance and coloration but different in body size and shape of ectoparamere. P. nitidus is larger than the new species (BL 8 mm vs. 6 mm). The male genitalia of the known species is armed with an upper branch nearly two times longer than the lower one, while the branches of the new species are similar in length.

Figures

FIGURE 1. Distribution of the new species.

FIGURE 2. Habitus (alive) of Homonemobius brevipennis sp. nov. in leaf. A. Male. B. Female.

FIGURE 3. Habitus photographs. A, B. Homonemobius brevipennis sp. nov. C, D. Pteronemobius osuviridis sp. nov. A, C. Male. B, D. Female. Scale bar: 1 mm.

FIGURE 4. Male genitalia. A–C. Homonemobius brevipennis sp. nov. D–F. Pteronemobius osuviridis sp. nov. A, D. Dorsal view. B, E. Lateral view. C, F. Ventral view.

FIGURE 5. Habitus (alive) of Pteronemobius osuviridis sp. nov. in feild.A. Male. B. Female.