Apotrechus quadratus Li & Liu

Li, Miao-Miao, Liu, Xian-Wei & Li, Kai, 2015, Review of the genus Apotrechus in China (Orthoptera, Gryllacrididae, Gryllacridinae), ZooKeys 482, pp. 143-155 : 145-148

Taxon classification Animalia Orthoptera Gryllacrididae

2. Apotrechus quadratus Li & Liu sp. n. Figs 7-9

Description.

Female. Body large. Wings apterous. Fastigium of vertex roundly projected, about 2 times as wide as scape; eyes reniform, produced; ocelli faintly. Pronotum almost hexagon, lateral lobes longer than high. Fore coxa with a spine, fore tibia on ventral surface with 5 pairs of spurs (included 1 pair of apical spurs) but without inner upper apical spur; mid tibia on ventral surface with 4 pairs of spurs (included 1 pair of apical spurs). Hind femur on ventral surface armed 8 internal spines and 1-3 external spines; hind tibia on dorsal surface bearing 6 pairs of rather small spines and 2 pairs of apical spurs. Cerci shorter, conical; subgenital plate broad, square, and hind margin slightly concave (Fig. 9). Ovipositor short, curved upwards, apex blunt.

Male. Unknown.

Coloration.

Body yellowish brown. Fastigium of vertex with 2 pairs of darkish black longitudinal bands; frons with 3 blackish longitudinal spots; inner margin of basal antenna and first segment with blackish spots. Lateral and fore margin of pronotum black, in the middle with a darkish black vertical stripe. Mesonotum and metanotum also with a black spot at middle parts (Figs 7-8). Hind femur with a blackish longitudinal stripe on external surface, all tibiae on base and apex darkish black.

Measurements.

(length in mm)

Material.

Holotype ♀, Guangxi, Xing’an, Maoer Mountain, 1700-2100m, 30. VII– 6.VIII. 2013, Xian-Wei Liu et al. leg.

Distribution.

China: Guangxi.

Diagnosis.

This new species is closely related to Apotrechus nigrigeniculatus Liu & Yin, 2002, but differs mainly in the the latter in body larger and subgenital plate of female with hind margin slightly concave.

Etymology.

The specific epithet referrers to shape of female subgenital plate.