Tetricodes Fennah, 1956

Chang, Zhi-Min, Yang, Lin, Long, Jian-Kun & Chen, Xiang-Sheng, 2017, Three new species of the Chinese planthopper genus Tetricodes Fennah (Hemiptera, Fulgoroidea, Issidae, Parahiraciini), ZooKeys 698, pp. 1-15 : 2-3

Genus Tetricodes Fennah, 1956

Tetricodes Fennah, 1956: 513; Zhang and Chen 2009: 17; Chen et al. 2014: 116.

Type species.

Tetricodes polyphemus Fennah, 1956.

Diagnostic characters.

Body slender beetle-like, oval. Width of head (Figs 1, 3, 5) including eyes narrower than pronotum. Vertex (Figs 7, 22, 31) with length in middle shorter than width at base, disc of vertex depressed, without median carina, with anterior margin obtuse-angled convex, posterior margin slightly concave. Frons (Figs 9, 24, 33) flat, median carina without or only present at base, big black hemispheroidal protuberance with light median line running from the upper margin, pale transverse band under the black protuberance. Clypeus triangular, broadly rounded, with median carina distinct or obscure. Rostrum surpassing mesotrochanters. Pronotum (Figs 1, 3, 5) short, with median carina obscure, lateral carinae not reaching to the posterior margin. Mesonotum (Figs 1, 3, 5) triangular, with median carina obscure, lateral carinae distinct. Hind tibiae each with 2-4 spines. Forewings (Figs 10, 26, 35) elongate, with length 2.3-2.6 times longer than maximum width, apical margin acutely rounded, ScP and Rp convergent near base, MP three or four branched, CuA simple, not forked; CuP present, Pcu and A1 uniting in clavus. Hindwings (Figs 11, 26, 35) well developed, as long as forewings, apical margin deeply incised into two big lobes, veins network-liked, anal lobe reduced.

Male genitalia.

Anal tube (Figs 13, 28, 37) short, irregularly oval or pentagonal in dorsal view. Anal style (paraproct and epiproct) (Figs 13, 28, 37) not surpassing anal tube. Pygofer (Figs 12, 27, 36) narrow, irregularly subquadrate. Genital styles (Figs 12, 27, 36) relatively short, without triangular prominence near dorsal margin before capitulum. Phallobase (Figs 14, 29, 38) with stout rod-like processes near base, lateral lobe splitting into two branches, with ventral lobe various. Aedeagus (Figs 14, 29, 38) with pair of foliaceous processes in lateral view.

Female genitalia.

Anal tube (Fig. 16) very long, truncated apically, anal style short, located at the base of anal tube. Hind margin of gonocoxa VIII with endogonocoxal lobe unobvious (Fig. 18), endogonocoxal process gradually narrowing (Fig. 18). Anterior connective lamina of gonapophyses VIII with 7 lateral teeth bearing 7 keels in lateral group and 3 apical teeth (Fig. 18). Gonoplacs (Fig. 21) without keels.

Checklist of species of Tetricodes Fennah, 1956

Tetricodes anlongensis Chen et al., 2014; China (Guizhou)

Tetricodes ansatus Chang & Chen, sp. n.; China (Guangxi)

Tetricodes fennahi Gnezdilov, 2015; China (Guizhou)

Tetricodes parvispinus Chang & Chen, sp. n.; China (Guizhou)

Tetricodes polyphemus Fennah, 1956; China (Guizhou, Hubei, Hunan, Yunnan)

Tetricodes similis Chang & Chen, sp. n.; China (Guizhou)

Key to species of Tetricodes (males)