Hyboella jiuwanshanensis, Deng, Wei-An, Zheng, Zhe-Min & Wei, Shi-Zhen, 2009

Deng, Wei-An, Zheng, Zhe-Min & Wei, Shi-Zhen, 2009, The genus Hyboella Hancock (Orthoptera: Tetrigidae: Metrodorinae) in China, Zootaxa 2064, pp. 57-68 : 65-67

15. Hyboella jiuwanshanensis sp.nov.

( Fig.21 )

Diagnosis. Hyboella jiuwanshanensis sp.nov. is similar to Hyboella longinota Zheng et Jiang, 2002 and Hyboella longipennis Zheng, 2005 , but differs from the latter by: width of vertex equal to width of one eye; width of longitudinal sulcus of frontal ridge narrower than width of first antenna segment; antennae inserted between one third of anterior margins of eyes; posterior margin of subgenital plate with a angular convex; hind femur brown, lower outer side black.

Description. Female. Size small, thin and long. Head not exserted. Anterior margin of vertex straight ( Fig. 21 a,21c), not protruding beyond eyes, median carina conspicuous. Width of vertex equal to width of one eye ( Fig.21 c), in profile, vertex and frontal ridge obtuse rounded together, frontal ridge arched protruding between two antennae, width of longitudinal sulcus of frontal ridge narrower than width of first antenna segment. Antenna filiform, 15 segments, middle segments 6–7 times longer than wide, inserted between one third of anterior margins of eyes ( Fig.21 d). Eyes spherical, protrusive, lateral ocellus located slightly above the middle of anterior margin of eye( Fig.21 d). Front part of pronotum strongly widened, arched and uplifted, disc of pronotum with numerous coarse tubercles (Figs 1,2). Anterior margin of pronotum straight, in contact with hind margin of eyes ( Fig. 21 a,21c). Midkeel of pronotum interrupted ( Fig. 21 a), slightly elevated in front of shoulders lateral view; upper margin of pronotum undulated in profile ( Fig. 21 b). Lateral keels of prozona constricted backward ( Fig. 21 a), humeral angle of obtuse shape, with a pair of abbreviated carinae between shoulders ( Fig. 21 a). Pronotum elongate, extending far beyond the top of hind femora, reaching the middle of hind tibia ( Fig. 21 a,21b). Lateral lobes of pronotum produced forwards, end of posterior angles truncate. Posterior margins of lateral lobes of pronotum with two concavities. Tegmina long oval, apex round. Wings reaching or surpassing apex of hind process of pronotum ( Fig. 21 b). Upper and lower margins of fore femur and midfemur straight ( Fig. 21 e), width of midfemur equal to width of tegmina. Length of hind femur as 3 times as width, midkeel of upper and lower side of hind femur dentate, antegenicular and genicular denticles acute. Outer side of hind tibia with 8–9 spines, inner side with 5–6 spines. Length of first segment of hind tarsi longer than third, third pulvillus longer than first and second, apices of first and second sharp, apices of third obtuse ( Fig. 21 f). Ovipositor narrow and long, length of upper valvulae 4 times its width, upper and lower valvulae with slender saw-like teeth. Length of subgenital plate wider than its width, posterior margin of subgenital plate with a angular convex( Fig.21 h).

Body black brown. Wings black. Fore and middle femora and tibia each with two dark transverse spots; hind femur brown, lower outer side black ( Fig.21 b). Hind tibia black brown, with light ring in the base.

Male. Body smaller than the female, feature of structure similar to the female. Width of midfemur wider than width of tegmina. Subgenital plate short, cone-shaped( Fig. 21 g).

Measurements. Length of body 38– 8.5 mm, Ƥ 9.5–10 mm; length of pronotum 39– 9.5 mm, Ƥ 10–10.5 mm; length of hind femur 35– 5.5 mm, Ƥ 6–6.5 mm.

Type Material. Holotype: female. P.R. CHINA, Guangxi prov., Huangjiang (Jiu wanshan), 25.1N, 108.0E, 400m alt, 23.vii.2006, collected by Wei-An DENG. Paratypes. one male and one female, same data as for holotype; three male and two female, Guizhou, libo(Maolan), 25.5N, 107.9E, 600m alt, 3.v.2008, collected by Wei-An DENG. Material is deposited in the Institute of Zoology, Shaanxi Normal University, Xi’an, China.

Etymology. The new species was named after the type locality, Jiuwanshan, Guangxi, China.

Distribution. China (Guangxi and Guizhou).

Figures

FIGURE 21. Hyboella jiuwanshanensis sp. nov. a) body of female, dorsal view; b) body of female, lateral view; c) head of female, dorsal view; d) head of female, frontal view; e) middle femur of female, lateral view; f) first and second posterior tarsal segments; g) subgentialplate of female, ventral view; h) subgential plate of male, lateral view (enlargement bar: a, b = 1 mm; c-h = 0.5 mm).