Tetricodes songae Zhang & Chen, 2009

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 : 19-22

Tetricodes songae Zhang & Chen , sp. nov.

( Figs 11–19, 23–27)

Description. Body length (from apex of coryphe to tip of forewings): ♁ 6.7 mm ♀ 6.8 mm; forewing length: ♁ 5.5 mm ♀ 5.6 mm.

Coloration. Body ( Figs 23, 24, 27) brown with greenish spots. Coryphe ( Figs 23, 24) light green. Eyes brown. Metope ( Fig. 26) dark brown,basal protuberance black. Clypeus and rostrum dark brown with light brown marks. Antenna light green. Pronotum light green, mesonotum pale brown. Forewings ( Figs 23, 24) yellowish brown, lateral margins with dark brown marks, veins light green; hindwings dark brown. Legs light brown with dark brown or light green spots or stripes. Abdomen ventrally pale brown with pale greenish areas.

Head and thorax. Coryphe ( Fig. 11) wider than long (1.9:1). Metope ( Fig. 12) longer than wide (1.4:1). Pronotum ( Fig. 11) without median keel, each side convex, in midline slightly longer than vertex (1.7:1). Scutellum ( Fig. 11) longer than pronotum (1.6:1) in midline. Forewing ( Fig. 13) 2.6 times longer than widest part, Sc and R convergent 1/4 near base, each reaching to margin of wing. M bifurcate 1/3 near base. MA bifurcate 2/3 near base. MA1 and MA2 reaching to margin of wing, MP bifurcate near middle, MP1 only reaching to the union of MA1 and MA2. MP2 reaching to margin. Hind wings ( Fig. 14) with length of incision about 0.3 times of hindwings. Hind tibiae with 2 teeth near apex.

Male genitalia. Anal segment ( Fig. 16) in dorsal view triangular, anterior margin weakly convex, apex with two finger-shaped lobes. Anal column near middle. Pygofer ( Fig. 15) narrow, hind margin convex in middle. Aedeagus ( Fig. 17) laterally each with a finger-like process near base and a oval flake 1/3 near apex. Aedeagus with ventral, lateral and dorsal lobes, apical margin of dorsal lobe straight, apically with a short ventral hook, lateral lobes apically with acute hook directed cephalad. Genital styles ( Fig. 18) in lateral view oval, with a hook-shaped process in middle of dorsal margin.

Type material. Holotype: ♂, Leigongshan National Natural Reserve (26°28´N, 108°17´E), Leishan, Guizhou Province, China, 1620–2178 m, 1 Aug. 2004, Q. Z. Song ; Paratypes: 2♂♂, 1♀, same data as holotype ( IEGU) ; 1♂, Leigongshan National Natural Reserve , Leishan, Guizhou Province, 17 Sep. 2005, Z. G. Zhang ( IEGU) ; 1♀, Pianma (26°01´N, 98°37´E), Lushui, Yunnan Province China, 2600–2900 m, 17 Aug. 2000, X. S. Chen ( IEGU) .

Etymology. The species name is derived from the last name of the first collector of the species, Q. Z. Song.

Host plant. Unknown.

Distribution. South China (Guizhou, Yunnan).

Remarks. This new species is similar to T. polyphemus Fennah, 1956 , but differs from the latter in: (i) larger body length including forewing ♂ 6.7 mm, ♀ 6.8 mm (♂ 5.8 mm, in T. polyphemus Fennah ) (ii) M bifurcate 1/3 near base, MA bifurcate 2/3 near base, MA1 and MA2 reaching to margin of wing, MP bifurcate near middle, MP1 only reaching to the union of MA1 and MA2, MP2 reaching to margin; (iii) anal segment in dorsal view triangular, anterior margin weakly convex, apex with two finger-shaped lobes (anal segment oval laterally without finger-shaped processes at apex in T. polyphemus Fennah ); (iv) aedeagus 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 (aedeagus laterally with a square flake 1/3 near apex, apical margin of dorsal lobe convex in middle, apically without any ventral hooks, lateral lobes apically truncate but not hooked in the T. polyphemus Fennah ).