Homogryllacris biloba
Creators: name: Zhang, Qianwen
name: Liu, Mingyu
name: Bian, Xun
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Orthoptera
Gryllacrididae
Homogryllacris
Homogryllacris biloba

description: Homogryllacris biloba (Bey-Bienko, 1957)
Ę叶ÑḆẽ
Figures 1–2
Description. Male (new description). Body medium. Face smooth with scattered impressed dots (Fig. 1A). Eyes oval. Ocelli distinct. Fastigium verticis about two times as wide as scape.
Pronotum projected slightly in median area of anterior margin, posterior margin faintly concave; lateral lobes longer than high, ventral margin almost straight, humeral sinus indistinct (Fig. 1B–C).
Fore coxae with 1 spine. Fore and middle femora unarmed on ventral surfaces, hind femora with 1–2 internal and 4 external spines on ventral surface. Fore and middle tibiae with 5 pairs of ventral spines, including 1 pair of apical ones; middle tibiae with 1 internal spine on dorsal surface; hind tibiae cylindrical with 4 internal and 4–5 external spines on dorsal surface, apices with 1 pair of dorsal spurs (the internal spur slightly longer than external one), 1 pair of subapical ventral spurs and 2 pairs of ventral spurs.
Wings small, positioned laterad, only reaching the middle area of mesonotum (Fig. 1C); hind wings absent. Ninth abdominal tergite prolonged, and curved ventrad, posterior margin arched with 1 median concavity (Fig. 1F). Tenth abdominal tergite with 1 pair of processes, suited on the concavity of ninth abdominal tergite; basal area of the processes depressed, crossed on each other, apical four-fifths area curved ventrad and slightly incurved, hook-shaped in apical view, apical area strongly sclerotised, apices acute. Cerci conical, directing dorsad and inwards (Fig. 1G). Subgenital plate broader than long, basal margin semi-membranous, posterior margin with an obtusely triangular concavity, the lateral lobes obtuse (Fig. 1H); styli inserted at apico-lateral angles of subgenital plate (Fig. 1H).
Coloration. Body yellowish brown. Internal margin of antennal socket black, ventral margin with 1 longitudinal black stripe on each side, basal areas and apical areas of scape black, pedicel with black spots, flagellum black (Fig. 1A). Fastigium verticis with 1 pair of black spots (Fig. 1A). Dorsal surface of head with 1 pair of black spots at anterior area and 1 semicircular black stripe (Fig. 1B). Pronotum with black margins, disc with 1 longitudinal black band along the midline which widened at anterior and posterior margins (Fig. 1B). Mesonotum and metanotum with widely longitudinal black stripe along the midline, which widened at posterior margin (Figs. 1B, 2B). Fore coxae with black spine. Apical areas of all femora and tibiae brown. Tegmina black. Abdominal tergites black, sternites with blackish spots in middle area.
Measurements (mm). Male: BL 16.5, PL 3.6, TL 0.8, HFL 8.7.
Material examined. 1 male, Cangshan, Dali, Yunnan, alt. 1999m, July 21, 2008, coll. by Jianmei Wang; 1 female, Xiaguan, Dali, Yunnan, June 20, 2023, coll. by Shihua Peng.
Distribution. Yunnan (Dali).
description: Published as part of Zhang, Qianwen, Liu, Mingyu & Bian, Xun, 2023, Contribution to the knowledge of Chinese Gryllacrididae (Orthoptera) XVII: New reports on Chinese Homogryllacris, pp. 295-300 in Zootaxa 5330 (2) on pages 295-297, DOI: 10.11646/zootaxa.5330.2.8, http://zenodo.org/record/8249429