Bryodemella (Zacher, 1919)

Zhang, Yu-Long, Zhi, Yong-Chao & Zhang, Dao-Chuan, 2018, A new species of the genus Bryodemella (s. str.) Yin, 1982 from China (Orthoptera: Acridoidea: Oedipodidae), Zootaxa 4413 (2), pp. 386-388 : 386-388

Bryodemella (s. str.) rufifemura sp. nov. (Figs. a–f)

Holotype: male. Paratypes: 1 male, 1 female, Langkazi , Xizang, 2013-IX-5, collected by Zhang Dao-Chuan, Zhi Yong- Chao and Wang Peng-Xiang.

Male. Body medium in size. Length of head obviously shorter than that of pronotum. Vertex short and broad, lateral margins distinct. Frons upright from lateral view, frontal ridge distinctly broad between antennae, constricted just below median ocellus, and not reaching to clypeus downward. Antennae filiform, reaching posterior margin of pronotum, length of a middle segment 2.0 times width. Foveolae slightly distinct, almost equilateral triangle. Eyes oval?vertical diameter 1.2 times horizontal diameter, and slightly longer than that of subocular groove. Median carina of pronotum thin, distinct in prozona yet indistinct in metazona, obviously incised by hind sulcus, metazona about 2 times longer than prozona, lateral keels of pronotum slightly distinct on metazona. Pronotum with dense strumae and short carinae, anterior margin straight, posterior margin almost right-angular. Prosternum appreciably swelled. Both elytra and hindwings developed, almost extending to the end of hind tibia, intercalary vein in medial area of elytra irregular and very weak. Main longitudinal veins of hindwings obviously thickened in basal half. Minimum width of interspace between mesosternal lobes 1.5 times its length. Hind femur dumpy, length 3.0 times maximal width, upper basal lobi longer than lower basal lobi, dorsal carina wholly smooth, lower knee lobes of inner side tilted inward. Outer side of hind tibia with 8 spines, and the inner side with 10 spines, outer apical spine absent. Arolium between claws not reaching the middle of claws. Tympanal organ developed, tympanic flap small, only covering minor part of tympanic cavity. Cerci long cylindrical. Supra-anal plate triangular, dorsal side flat. Subgenital plate brevi-conic, apex blunt. Epiphallus as shown in Fig. b.

Female. Body larger and more robust than male. Antennae shorter, not reaching hind margin of pronotum, length of a middle segment 2 times width. Vertical diameter of eyes shorter than that of subocular groove. Metazona of pronotum about 1.9 times prozona in length. Minimum width of interspace between mesosternal lobes 2.0 times its length. Elytra shorter, extending over the end of hind femur, intercalary vein of medial area absent. Ovipositor short and thick, apical part hook-like, upper external margin of dorsal valves smooth. Others same as male.

FIGURES a–f. Bryodemella (s. str.) rufifemura sp. nov. a. Body dorsal view Ƌ; b. Epiphallus; c. Head and pronotum dorsal view Ƌ; d. Head lateral view ♀; e. Hind femur inner side; f. Body lateral view ♀.

Coloration: Body brown or grayish brown. The base of a quarter of elytra darkish. Base of hindwings red except darker pre-anal area, fascia darker from anterior to posterior margins. Hind femur with red on full inner side, with a darker fascia in the middle, and with two dark bands on upper side. Hind tibia orange red. Tarsus red.

Measurement (mm): Length of body: male 26.9–27.5, female 34.6. Length of pronotum: male 7.5–8.7, female 10.4. Length of elytra: male 27.4–28.2, female 24.1. Length of hind femur: male 11.8–12.6, female 17.5.

Diagnosis. The new species Bryodemella (s. str.) rufifemura sp. nov. is similar to Bryodemella (s. str.) diamesum (Bei-Bienko, 1930), but differs from the latter by red color of almost full inner side of hind femur, median keel of pronotum indistinct in metazoan and vertical diameter of eye shorter than subocular groove in female.

Etymology: The specific epithet is named for coloration of hind femur by rufi- meaning red in Latin.