Folifemurum gen. nov.

Type species: Folifemurum duplicatum sp. nov.

Description. Head with eyes distinctly narrower than pronotum (Fig. 1). Metope and genae not extended to form a proboscis (Fig. 2). Coryphe more or less quadrilateral, rough with fine granules, disc depressed; length in midline almost equal to width at two posterior angles (Fig. 1). Ocelli present. Metope with disc finely granulose and distinctly elevated, median carina present (Fig. 3). Metopoclypeal suture slightly arched. Postclypeus smooth, on same plane as metope, apical part curved downward (Fig. 3). Rostrum relatively long, exceeding mid-trochanter. Pronotum with anterior margin distinctly convex and posterior margin nearly truncate; disc finely granulose with median carina and two pits. Mesonotum nearly triangular, with pit on lateral margin; disc slightly elevated with fine granules, median carina present. Forewings coleopterous, nearly rectangular and rounded apically, costal margin nearly parallel to inner margin; claval suture absent, longitudinal veins present and distinct, irregular cross veins distinct (Figs. 4, 23). Hind wings reduced with vannus and anal lobe rudimentary, shorter than half length of forewings; veins indistinct (Fig. 5). Legs relatively long, fore and middle femora slightly foliate (Figs 6–7); lateral margin of hind tibia with 3 teeth (Fig. 8). Spinal formula of hind leg 8–8–2 (Fig. 9).

Male genitalia. Symmetrical; anal tube mushroom-shaped. Posterior margin of pygofer not produced and without spines; penis tubular, U-shaped, symmetrical with two spiniform processes near mid-length.

Female genitalia. Anal tube cuplike, longer than widest part. Anterior connective lamina of gonapophyse VIII with teeth. Gonoplacs nearly triangular in lateral view.

Diagnosis. In view of its elliptical body, the forewing without claval suture, its small hind wings (with vannus and anal lobe rudimentary and shorter than half of fore wings) and foliately dilated fore and middle femora, we treat this genus as a member of the tribe Parahiraciini. This genus resembles Neodurium Fennah according to the lack of a claval suture in the forewing and the lateral margin of hind tibia bearing 3 teeth, but can be distinguished by the following characteristics: 1) hind wing with vannus and anal lobe rudimentary (anal lobe only rudimentary in Neodurium); 2) pronotum with median carina only present (median and lateral carinae present in Neodurium); 3) spinal formula of hind leg 8–8–2 (in Neodurium: 8–(11–19)–2).

Etymology. The name “ Folifemurum ” is compiled from the Latin prefix “foli-” meaning leaf-shaped, and the Latin noun “femur”, together indicating the fore femur of this genus is slightly foliately dilated. This name is neutral in gender.

Distribution. China (Sichuan, Yunnan Province).