Woznessenskia arcoida, Guo, Li-Ying & Shi, Fu-Ming, 2011

Guo, Li-Ying & Shi, Fu-Ming, 2011, Descriptions of new species of the genus Woznessenskia (Orthoptera: Gryllacrididae: Gryllacridinae) from China, Zootaxa 2784, pp. 62-68 : 63-65

2. Woznessenskia arcoida sp. nov.

(Figs. 1–8, 23, 26, 29–30)

Male. Body large for the genus. Distance between antennal sockets about equal to width of scape. Eyes ellipsoidal, obviously protruding. Fore margin of pronotum slightly prominent, hind margin nearly straight; lateral lobe subrectangular, high slightly shorter than length, humeral sinus indistinct. Tegmina considerably surpassing apices of hind femora, about 2.3 times as long as hind femora; media vein arises singly from base of tegmen; R-M and CuA1- CuA2 areas of tegmina merged along a short distance. Hind wings slightly longer than tegmina. Fore and middle tibiae with 5 pairs of spurs (including a pair of apical spurs) on ventral margin, apical spurs short, middle tibiae with an inner apical spur on dorsal margin; hind femora with 8–10 inner spines and 7–8 outer spines on ventral margin; hind tibiae with 6 inner spines and 7 outer spines on dorsal margin, a pair of ventral spurs near apex, a pair of apical spurs on dorsal margin and 2 pairs of apical spurs on ventral margin. Eighth abdominal tergite enlarged; apex of ninth abdominal tergite curved downwards, lateral margins of apex of ninth abdominal tergite with a pair of characteristic S-curved hooks, the hooks with many hairs on inner side; tenth abdominal tergite with a pair of incurved arcuate processes, basal part of processes cylindrical, apical part compressed and acute, with 10 denticles along rather long distance. Subgenital plate simple, broader than long, with shallow emargination at middle of apex; styli short, conical, on both sides of subgenital plate near apex. Cerci slender, cylindrical, hirsute. Apex of male abdomen as in Figs. 2–3.

Female. Appearance of female is similar to male. Hind femora with 8–10 inner spines and 7–8 outer spines on ventral margin. Seventh abdominal sternite long, both sides of posterior part concaved, forming a pair of roundly angular blade-like fold structure, hind margin emarginated in middle. Subgenital plate small, semimembranous, with abundant fine stripes, hind margin rounded. Ovipositor slightly shorter than hind femora, slightly curved dorsally, apex rounded.

Coloration. Body yellowish brown. Occiput black, genae with a pair of black stripes; eyes brown; carina surrounding antennal sockets black; dorsal margin of scape black; other part of antenna brown (dark near scape and slightly pale in apical part). Pronotum with black margins and black spots as in Figs. 5, 26. Veins on tegmina and hind wings dark brown, cells hyaline. All spines and spurs on legs darkened. Tergites of basal part of abdomen yellowish at base and black in apical half; tergites of apical part of abdomen entirely black. Hooks of ninth tergite black, inner margin yellowish. Apical part of processes of male tenth abdominal tergite blackish brown.

Measurements (mm). Body: 323.0–23.5, ♀22.5–24.2; pronotum: 35.5, ♀5.0–5.5; hind femora: 315.0–16.0; ♀14.5–15.5; tegmina: 334.5–38.0, ♀33.5–36.5; ovipositor: ♀13.0–14.5.

Type material. Holotype, male, Jiuwandashan, Rongshui, Guangxi, 1 August, 2006, collected by Fu-Ming Shi and Shao-Li Mao. Paratypes, 4 females, the other data as holotype; 1 male and 1 female, 2 August, 2006, collected by Fu-Ming Shi and Shao-Li Mao.

FIGURES 1–8. Woznessenskia arcoida sp. nov.: 1. R-M and CuA1-CuA2 areas of tegmina; 2. apex of male abdomen in lateral view; 3. apex of male abdomen in apical view; 4. subgenital plate of male in ventral view; 5. head and pronotum in dorsal view; 6. frons in frontal view; 7. seventh abdominal sternite and subgenital plate of female in ventral view; 8. apex of process of male tenth abdominal tergite in lateral view; scale bars = 1mm.

Discussion. The new species is similar to W. arcuata Gorochov, 2002 , but it differs from the latter in: processes of male tenth abdominal tergite not surpassing apices of cerci; R-M and CuA1-CuA2 areas of tegmina merged along a short distance.

Distribution. China (Guangxi).

Etymology. The name of the new species is derived from arcuate processes of male tenth abdominal tergite.