Bryodemella (s. str.) xinjiangensis, Yin & Wang, 2005

Yin, Xiang-Chu & Wang, Wen-Qiang, 2005, Two new species of the genus Bryodemella (s. str.) from China (Orthoptera: Oedipodidae), Zootaxa 973, pp. 1-7 : 2-4

Bryodemella (s. str.) xinjiangensis sp. nov. ( Figs. a –b, d)

Type materials. Holotype: male, CHINA: Jimunai county, Xinjiang Uigur Autonomous Region (47º26´N, 85º52´E), alt. 980–1100m (Wang Wen­Qiang and Li Xin­Jiang), 26 Aug. 2003 ( MHU). Paratypes: 2 males, 2 females, same data as holotype ( MHU).

Diagnosis. The new species is most similar to Bryodemella (s. str.) gansuensis . The major differences are listed in Table 1 .

Description: Males (fig. a). Body medium sized. Length of head distinctly shorter than that of pronotum. Vertex short and broad, lateral margins distinct. Frons upright in lateral view, frontal ridge with longitudinal sulcus, lateral carinae slightly broaden between antennae, slightly concave and constricted just below median occilus, and not reaching to clypeus downward. Antennae filiform, extending beyond posterior margin of pronotum, length of a middle segment 2.2 times width. Foveolae slightly distinct, almost equilateral triangle. Eyes oval, vertical diameter 1.25 times horizontal diameter, and slightly longer than length of subocular groove. Median carina of pronotum thin, wholly distinct, clearly incised by hind sulcus, metazona about 2 times longer than prozona, lateral keels of pronotum slightly displayed on metazona. Pronotum with dense strumae and short carinae, anterior margin straight, posterior margin almost right­angular. Prosternum appreciably swelled. Both elytra and hindwings developed, almost extending to end of hind tibia, intercalary vein in medial area of elytra irregular and very weak. Main longitudinal veins of hindwings distinctly thickened in basal half. Width of interspace between mesosternal lobes 1.5 times its height. Hind femur dumpy, length 3.4 times maximal width, upper basal lobi longer than lower basal lobi, dorsal carina wholly smooth, upper keel of outer side serrated in terminal half, lower knee lobes of inner side tilted inward (fig. d). Outer side of hind tibia with 8–9 spines, and inner side with 9–12 spines, outer apical spine absent. Arolium between claws not reaching to middle of claws. Tympanal organ developed, tympanic flap small, only covering very small portion of tympanic cavity. Cerci long cylindrical. Supra­anal plate triangular, dorsal side flat. Subgenital plate brevi­conic, apex blunt.

Females (fig. b). Body larger and more robust than males. Antennae shorter, almost extending to hind margin of pronotum, length of a middle segment 2 times width. Vertical diameter of eyes slightly shorter than length of subocular groove. Metazona of pronotum about 1.7–1.8 times longer than prozona. Width of interspace between mesosternal lobes 2.5–3 times its height. Elytra shortened, extending just to meddle of hind femur, intercalary vein of medial area very weak and not serrated. Hindwings triangular, distinctly shorter than elytra, only about 2/3 of elytra. Ovipositor short and thick, apical part hookish, upper external margin of dorsal valves with weak blunt teeth. Others same as male.

Coloration: Males. Body brown or grayish brown. Basal quarter of elytra darkish, the other part with some dark spots. Base of hindwings red except darker pre­anal area, fascia darker from anterior to posterior margins, with two dark speckles in terminal part. Hind femur with a yellow ring near knees, inner and lower side darkish red, 2/3 of outer and upper aspect with a darker fascia. Inner and upper aspect of hind tibia orange red, outer and lower aspect pale orange yellow. Tarsus yellowish white.

Females. Elytra without dark fascia in basal part, but with some small dark spots. Hindwings without dark speckles in terminal part. Other colors same as male.

Measurement: Length of body: male 25.3–25.5 mm, female 30.7–32.8 mm; Length of pronotum: male 6.5–6.8 mm, female 7.8–8.4 mm; Length of elytra: male 26.7– 26.3 mm, female 14.0– 14.7 mm; Length of hind femur: male 11.7–12.0 mm, female 14.9–15.3 mm.

Habitat: Inhabiting a small hillside at the Jimunai Gobi border, there dried and with sparse shrubs and grasses.

Etymology: The specific name is a noun in apposition taken from the type locality.

Tables

TABLE 1. Comaprison of characters of two species of the genus Bryodemella (s. str.).

B. (s. str.) gansuensis ( Zheng, 1985)	B. (s. str.) xinjiangensis sp. nov.
Elytra in female longer, extending close to end of hind femur	Elytra in female shorter, extending just to middle of hind femur (fig. b)
Red area in base of hindwings large	Red area in base of hindwings small (fig. a)
Inner and lower sides of hind femur black, outside darkish brown	Inner and lower sides of hind femur darkish red, outside orange yellow (fig. a–b)
Inner and upper sides of hind tibia reddish purple, outer and lower side yellowish brown	Inner and upper sides of hind tibia orange red, outer and lower side orange yellow