Tuberfemurus torulisinotus Deng, 2019

Deng, Wei-An & Lu, Xiang-Yi, 2019, Description of a new species and a key to species of the genus Tuberfemurus Zheng (Orthoptera: Tetrigoidea: Cladonotinae) from China, Zootaxa 4544 (1), pp. 135-143 : 136-137

Tuberfemurus torulisinotus Deng , sp. nov.

Figs 9–24

Type material. Holotype—female, China: Guizhou prov., Daozhen (Dashahe), 29°9’N, 107°36’E, 1500m alt., 0 9 August 2017, collected by Xiang-yi LU (SCBHU). Paratypes: the same label as in holotype, 2 males, 3 females, collected by Xiang-yi LU and You-MingYAO (SCBHU).

Description. Female (holotype). Size small, body robust and short. Fastigium of vertex in dorsal view not surpassing the anterior margin of eyes, 2.0 times wider than width of one eye from above; anterior margin of fastigium almost straight, median carina of fastigium reaching the middle of eyes; fossula deep; lateral margins of vertex produced upwards and elevated to level of upper margin of compound eye; frontal ridge in lateral view obtuse-rounded and distinctly concave above lateral ocelli, protruded anteriorly and arcuate between antennae sockets. In frontal view frontal carinae diverged between lateral ocelli, width of longitudinal furrow of frontal ridge 1.2 time more than width of diameter of antennal socket. Antennae filiform, located far below the eyes, 14- segmented, mid segments 6–7 times as long as wide. Eyes globose; lateral ocelli placed in between lower third of inner margin of eye.

Pronotum short, reaching middle of hind femora, its surface coarse and dorsum of hind pronotal process with netted keels and notchs. Median carina of pronotum strongly lamellate elevated, in profile anterior half arch-like and posterior half depressed to straight. In dorsal view, anterior margin of pronotum truncate, lateral keels of prozona slightly lamellar and parallel, with a tuberous protuberance between shoulders and with one pair of short longitudinal carinae on this tuberous protuberance, apex of the posterior process of pronotum widely rounded and with weak excision. Lower margin of hind process curved, lateral keels of metazona curved too, width of the area between the two is 1.5–1.8 mm. Posterior angles of lateral lobes produced outwards, end of posterior angles truncate, posterior margins of lateral lobes of pronotum with one concave. Tegmina and hind wings absent. Fore and mid femora with upper carinae slightly sinuate and gentle serrated; lower carinae of fore femora sinuate and with 1–2 teeth, lower carinae of mid femora sinuate and with 2–3 teeth. Hind femur stout, 3.0 times as long as wide; upper carinae gentle serrated; lower carinae with 6–7 small teeth and undulated; lower outer keel of hind femora with 2–3 projections; antegenicular and genicular denticles acute. Outer side of hind tibia with 5–7 spines, inner side with 4–6 spines. Length of first segment of hind tarsi slightly longer than third, first pulvillus shorter than second and third, apices of first acute, apices of second and third obtuse. Ovipositor stubby, length of upper valvulae 3.3 times its width, upper and lower valvulae with slender saw-like teeth. Length of subgenital plate nearly equal to its width, middle of posterior margin of subgenital plate with a triangular projecting.

Body brown, but living body with metal green; with large blackish spot behind shoulder. Median carina of pronotum light brown with numerous black spots around upper margin. Fore and mid femora and tibiae brownish grey with two transverse black stripes. Hind femur dark brown, with two to three light colour in the outer side. Hind tibia black, with two light ring in the middle.

Male. Similar to female, but smaller and narrower. Width of vertex 2 times the width of an eye, width of longitudinal furrow of frontal ridge 1.5 time width of diameter of antennal socket, width of the area between lower margin of hind process and lateral keels of metazona is 0.8–1.1 mm. Subgenital plate brief cone-shaped, apex bifurcated.

Measurements (mm). Length of body: ♂ 10.0–10.5, ♀ 12.8–13.0; length of pronotum: ♂ 7.0–7.5, ♀ 7.8–8.0; length of hind femur: ♂ 6.5–7.0, ♀ 7.5–8.0.

Diagnosis. New species can be easily distinguished from other species of the genus by median carina of pronotum in profile, anterior half arch-like and posterior half depressed to straight; pronotum with a tuberous protuberance between shoulders.

Features permitting discrimination among species of Tuberfemurus and diagnosis of T. torulisinotus sp. nov. are presented in Table 1.

Distribution. P. R. CHINA: Guizhou.

Etymology. The specific epithet is derived from “ torulis ” and “ notus ”, meaning disc of pronotum with a protuberance between shoulders.

Figures

FIGURES 9–12. Tuberfemurus torulisinotus Deng, sp. nov., holotype female. 9, body, lateral view; 10, the same, dorsal view; 11, head and anterior part of pronotum, dorsal view; 12, the same, lateral view. Scale bars 1 mm.

FIGURES 13–20. Tuberfemurus torulisinotus Deng, sp. nov., female holotype. 13, head, frontal view; 14, left fore femur, lateral view; 15, left mid femur, lateral view; 16, left hind femur, lateral view; 17, the same, dorsal view; 18, left hind tibia, lateral view; 19, left posterior tarsi, lateral view; 20, ovipositor, lateral view. Scale bars 1 mm.

FIGURES 21–24. Tuberfemurus torulisinotus Deng, sp. nov. 21, female subgenital plate, ventral view; 22, male body, lateral view; 23, the same, dorsal view; 24, male apex of abdomen, lateral view. Scale bars 1 mm.