Tetricodes Fennah, 1956

Zhang, Zhengguang & Chen, Xiangsheng, 2009, Review of the oriental Issid genus Tetricodes Fennah (Hemiptera: Fulgoroidea: Issidae) with the description of one new species, Zootaxa 2094, pp. 16-22 : 18

Key to species of Tetricodes Fennah

1 Body length of males more than 6.0 mm. Anal segment ( Fig. 16) in dorsal view triangular, anterior margin weakly convex laterally, apex with two finger-shaped lobes. Aedeagus ( Fig. 17) laterally with an oval flake 1/3 near apex; apical margin of dorsal lobe straight, apically with a short ventral hook, lateral lobes apically with an acute hook directed cephalad. Hind tibiae with two teeth near apex... ..................................... T. songae Zhang & Chen , sp. nov.

- Body length of males not more than 6.0 mm. Anal segment ( Fig. 7) in dorsal view oval; Aedeagus ( Fig. 9) laterally with a quadrangular flake near apex. Hind tibiae with a small tooth near base and two large teeth near apex ............. ................................................................................................................................................... T. polyphemus Fennah

Tetricodes polyphemus Fennah, 1956

( Figs 1–10, 20–22)

Tetricodes polyphemus Fennah, 1956: 514 ; Fig. 23, A–D.

Description. Body length (from apex of coryphe to tip of forewings): ♁ 5.8 mm; forewing length: ♁ 4.7 mm

Coloration. Body brown. Coryphe ( Fig. 20) brown with dark brown marks. Eyes dark brown. Metope ( Fig. 21) dark brown, basic hemispheroidal protuberance black. Clypeus brown with light brown marks near base. Rostrum brown. Antenna dark brown. Pro- and mesonotum ( Fig. 20) brown, with scattered dark brown spots. Forewings yellowish brown, lateral margins with dark brown marks, hindwings dark brown. Legs brown with dark brown annular stripes. Abdomen ventrally dark brown.

Head and thorax. Coryphe ( Fig. 1) wider than long (1.7:1). Metope ( Fig. 2) longer than wide (1.3:1). Pronotum ( Fig. 1) without median keel, in middle line slightly longer than vertex (1.5:1). Scutellum ( Fig. 1) longer than pronotum (1.9:1). Forewing ( Fig. 4) 2.4 times longer than widest part, Sc and R convergent 1/4 near base, each reaching to margin. M bifurcate 1/3 near base, MA simple reaching to margin, MP bifurcate near middle, MP2 reaching to margin, MP1 and MP2 joining at distal. Hindwing ( Fig. 5) with length of incision about 0.2 times of hindwings. Hind tibiae with a small tooth near base and two large teeth near apex.

Male genitalia. Anal segment ( Fig. 7) in dorsal view oval, anal column near middle. Pygofer ( Fig. 6) narrow, hind margin slightly convex. Aedeagus ( Figs 9, 10) laterally with a quadrangular flake near apical and a finger-like process near base. Aedeagus with lateral, ventral and dorsal lobes. Apical margin of dorsal lobe convex in middle. Lateral lobes apical margin truncate not hooked. Genital styles ( Fig. 8) in lateral view oval, with a hook-shaped process in middle of dorsal margin.

Material examined. 1 ♂, Leigongshan National Natural Reserve (26°28´N, 108°17´E), Leishan, Guizhou Province, China, 2 Aug. 2004, F. L. Xu ( IEGU) .

Host plant. Unknown.

Distribution. South China (Hubei, Guizhou).

Discussion. Tetricodes polyphemus was described from a female only. Based on the following reasons we consider the male specimen described here as Tetricodes polyphemus : i) body length not surpassing 6.0 mm; ii) hind tibiae with a small tooth near base and two big teeth near apex; and iii) the male genitalia of the species here is related to the material described in Ran’s dissertation (not published), which was collected from Hupeh (1♂, Suisapa, 1000m, Lichuan Distr. W. Hupeh, 28 Aug. 1948).