Tuberfemurus convexa, Deng, 2020

Deng, Wei-An, 2020, Taxonomic revision of the subfamily Cladonotinae (Orthoptera: Tetrigidae) from China with description of three new species, Zootaxa 4789 (2), pp. 403-440 : 433-434

Tuberfemurus convexa sp. nov.

( Figure 14 )

Type material. HOLOTYPE: female, P. R. CHINA: ZHEJIANG: Linan (Tianmushan), 13 July 1937, collector is unknown ( EMHU) . PARATYPES. 5♀, same data, type locality ( EMHU) .

Description. Female. Small size, short. Body rough, interspersed with dense protuberances.

Head. Head is not exserted above pronotal surface. Fastigium of vertex short; in dorsal view, width of vertex between eyes 1.8 times width of compound eye; anterior margin of fastigium is nearly truncate, slightly surpassing anterior margin of eye; median carina visible anteriorly; lateral margins turned backward. In lateral view, frontal ridge and vertex forming a rounded-angle shape, frontal costa distinctly concave between eyes, protruded anteriorly and broadly rounded between antennal grooves. In frontal view, frontal costa bifurcated above lateral carinae, scutellum (longitudinal furrow) widely forked between antennae, the rami strongly divergent, width of longitudinal furrow of frontal ridge 2.2 times antennal groove diameter. Antennae short, filiform, antennal grooves inserted far below inferior margin of compound eyes, 14-segmented, the 7th and 8th segment are the longest, about 3 times longer than its width. Eyes globose, lateral (paired) ocelli located between inferior margin of compound eyes.

Thorax. Pronotum is wide and short, in dorsal view, dorsum of pronotum is rough, with coarse tubercles and notches, anterior half tectiform and posterior half depressed, with large convex between shoulders, with truncate anterior margin, lateral carinae of prozona parallel and median carina of pronotum entire; humeral angle obtuse-arched; in profile, median carina of pronotum lamellate elevated before shoulders and suddenly depressed to straight behind shoulders; hind pronotal process narrow, short cone-shaped, reaching knee of hind femur and its apex narrowly rounded. Lower margin of hind process curved, lateral carinae of metazona curved too, width of the area between the two is 1.2 mm. Posterior angles of lateral lobes produced outwards, end of posterior angles slightly truncate, posterior margins of lateral lobes of pronotum only with ventral sinus. Tegmina and hind wings absent.

Legs. Fore and middle femora slightly compressed, margins finely serrated, with carinated and undulated ven- tral margins. Hind femora robust and short, 3.1 times as long as wide; with carinated and margins finely serrated, lower carinae with 6-7 small teeth and undulated; lower outer carinae of hind femora with 2-3 projections; antegenicular denticles and genicular denticles obtuse. Outer side of hind tibia with 6–7 spines, inner side with 4–5 spines. Length of first segment of posterior tarsi longer than third, three pulvilli of first segment of posterior tarsi are increased in turn, apex right angle.

Abdomen. Ovipositor narrow and long, length of upper valvulae 3.7 times its width, upper and lower valvulae with slender saw-like teeth. Length of subgenital plate longer than its width, middle of posterior margin of subgenital plate triangular projecting.

Coloration. Body dark brown; antennae brown. Hind tibia dark brown.

Male. unknown.

Measurements (mm). Length of body: ♀ 9.5–10.0; length of pronotum: ♀ 7.5–8.0; length of hind femur: ♀ 5.0–5.5.

Diagnosis. New species can be easily distinguished from other species of the genus by hind pronotal process narrow, short cone-shaped, reaching knee of hind femur and its apex narrowly rounded. New species is similar to Tuberfemurus torulisinotus Deng, 2019 from which it differs in apex of hind pronotal process narrowly rounded, lower carinae of fore femora and mid femora sinuate and without tooth (apex of hind pronotal process widely rounded and with weak excision, lower carinae of fore femora sinuate and with 1-2 teeth, lower carinae of mid femora sinuate and with 2-3 teeth in T. torulisinotus ).

Etymology. The specific epithet is derived from “ convexa ”, meaning disc of pronotum with large convex between shoulders.

Distribution. P. R. CHINA: Zhejiang.

Note. Pseudepitettix convexa Deng was proposed in DENG’s (2016) PhD Dissertation, which has not been published according to the criteria of availability (ICZN 1999: Art. 8.1). The species has 2-3 projections on lower outer carinae of hind femora, middle femora with undulated ventral margins and belongs to Tuberfemurus Zheng, 1992 , not to Pseudepitettix Zheng 1995 . The name Tuberfemurus convexa Deng is made available in this paper.

Figures

FIGURE 14A–I. Tuberfemurus convexa sp. nov., female, holotype: A—body in dorsal view; B—body in lateral view; C—head in dorsal view; D—head in lateral view; E—head in frontal view; E—left fore femur in lateral view; F—left mid femur in lateral view; G—left hind femur in lateral view; H—left hind tibia in dorsal view; I—Ovipositor in lateral view. (scale bar = 1 mm).