Tenguna watanabei Matsumura, 1910 (original designation).

Genus diagnostic characters: general color green or yellowish green (in death); vertex with median carina distinct and complete, lateral margins sub-parallel at base, slightly sinuate in front of eyes, then gradually narrowing to arrowhead at apex; pronotum with distinct median carina and two obscure lateral discal carinae, elevated only anteriorly; fore femur with one minute, short and blunt spine near apex; aedeagus with a pair of processes apically and phallobase with pairs of membranous lobes apically.

Southern China (Guizhou, Hubei, Sichuan, Taiwan, Xizang).

♂, BL: 13.1–14.1 mm; HL: 1.7–1.8 mm; HW: 1.5–1.6 mm; FWL: 9.9–10.3 mm. ♀, BL: 15.2–16.3 mm; HL: 1.8–1.9 mm; HW: 1.6–1.8 mm; FWL: 12.3–12.9 mm.

This species is similar to Tenguna medogensis, but can be distinguished from phallobase. The former with three pairs of membranous lobes at apex, the latter with two pairs of membranous lobes at apex.

General color green; carinae on cephalic process, frons, pronotum and mesonotum, and parts of veins on forewings, dark green; rostrum with extreme apex blackish; hind tibia with lateral and apex black-tipped spines .

Cephalic process (Figs 1–5) relatively short, a little upturned, ratio length to length of pronotum and mesonotum combined 0.6. Vertex (Figs 1–3, 5) with lateral margins carinate, sub-parallel at base, slightly sinuate in front of eyes, then gradually narrowing to arrowhead at apex, ratio of length to width between eyes 2.8. Frons (Fig. 4) elongate, median carina complete and elevated, length 2.6 times long than width. Pronotum (Figs 1–3) distinctly shorter than mesonotum medially in the middle line, median carina distinct, lateral carina obscure, ratio length to length approx. 0.2:1. Forewings (Figs 1, 6) with Sc+R, M and Cu all branched apically; stigma distinct, with 3–5 cells. Legs moderately long; fore femur not flattened and dilated, with one minute, short, blunt spine near apex; hind tibia with 6–7 lateral black-tipped spines and eight apical black-tipped teeth.

Figures 1–13. 

Tenguna kuankuoshuiensis sp. n. 1 male, holotype 2 female 3 Head and thorax, dorsal view 4 Frons and clypeus, ventral view 5 Head and pronotum, lateral view 6 Forewing 7 Hind wing 8 Pygofer and anal tube, dorsal view 9 Pygofer and parameres, ventral view 10 Genitalia, lateral view 11 Aedeagus, lateral view 12 Aedeagus, ventral view 13 Aedeagus, dorsal view. Scale bars: 1–7 2 mm; 8–13 0.5 mm.

Male genitalia. Pygofer (Figs 8–10) wider ventrally than dorsally, posterior margin with a blunt process, ventral margin depressed to accommodate anal tube (Fig. 8). Parameres (Figs 8, 9) large, distinctly broadening towards apex in lateral view (Fig. 8), posterior margin straight, upper margin with dorsally directed, black-tipped process near middle, with ventrally directed, hook-like process near sub-middle on outer upper edge. Anal tube (Figs 8, 10) oval in dorsal view, ratio length to width approx. 2.0:1. Aedeagus (Figs 11–13) with one pair of special long endosomal processes, processes with apex acute, sclerotized and pigmented. Phallobase sclerotized and pigmented at base, with three pairs of membranous lobes at apex: the dorsal lobe large and the ventral lobe with small lobe in lateral view (Fig. 11), two pairs of large lobes in dorsal view (Fig. 12), three pairs of lobes and numerous small spines on it in ventral view (Fig. 13).

Female genitalia. Anal tube (Fig. 15) round and large in dorsal view, ratio length to width at middle nearly 1.0. First valvula (Fig. 16) sclerotized with six different sized teeth in lateral view. Second valvulae (Fig. 17) triangular, symmetrical in ventral view, connected at base and separated from 1/5 base. Third valvula (Fig. 18) with two sclerotized lobes, lateral lobe with six long spines at apex.

Figures 14–18. 

Tenguna kuankuoshuiensis sp. n. 14 Genitalia ventral view of female 15 Genitalia dorsal view of female 16 First valvulae (lateral view) 17 Second valvulae (ventral view) 18 Third valvulae (lateral view). Scale bars 0.5 mm.

Holotype ♂, China, Guizhou, Kuankuoshui, Qing gang tang hui long county. 17.VIII. 2010, Lihu. Paratypes, 1♂2♀♀, same to Holotype; 9♂♂5♀♀, China, Guizhou, Fanjing mountain, 27.VII. 2001, Lizizhong.

This new species is named for the holotype occurrence in “Kuankuoshui”, Guizhou province in southwestern China.

♂, BL: 14.9 mm; HL: 2.1 mm; HW: 1.6 mm; FWL: 11.4 mm. ♀, BL: 15.2–16.7 mm; HL: 2.2–2.5 mm; HW: 1.6–1.8 mm; FWL: 11.6–12.3 mm.

This species can be distinguished from other species from aedeagus and phallobase. The aedeagus with pair of unequal long processes apically; phallobase with numerous membranous lobes at apex.

General color and external characters as the Tenguna kuankuoshuiensis sp. n.

Cephalic process (Figs 19–24) relatively short, a little upturned, ratio length to length of pronotum and mesonotum combined 0.7. Vertex (Figs 19–22, 24) with lateral margins carinate, sub-parallel at base, slightly sinuate in front of eyes, then gradually narrowing to arrowhead at apex, ratio of length to width between eyes 2.3. Frons (Fig. 23) elongate, median carina complete and elevated, length 3.0 times long than width. Pronotum (Figs 21, 24) distinctly shorter than mesonotum medially in the middle line, median carina distinct, lateral carina obscure, ratio length to length approx. 0.2:1. Forewings (Figs 19, 20, 25) with Sc+R, M and Cu all branched apically; stigma distinct, with five cells. Legs narrow and moderately long; fore femur with one minute, short, blunt spine near apex; hind tibia with six lateral black-tipped spines and eight apical black-tipped teeth.

Figures 19–32. 

Tenguna plurijuga sp. n. 19 male, holotype 20 Same, female 21 Head and pronotum, lateral view 22 Head and thorax, dorsal view 23 Frons and clypeus, ventral view 24 Head and pronotum, lateral view 25 Forewing 26 Hind wing 27 Pygofer and anal tube, dorsal view 28 Pygofer and parameres, ventral view 29 Genitalia, lateral view 30 Aedeagus, lateral view 31 Aedeagus, ventral view 32 Aedeagus, dorsal view. Scale bars 19–26 = 2 mm; 27–32 0.5mm.

Male genitalia. Pygofer (Figs 27–29) wider ventrally than dorsally, posterior margin with a blunt process, ventral margin depressed to accommodate anal tube. Parameres (Figs 27, 28) large, distinctly broadening towards apex in lateral view (Fig. 27), posterior margin straight, upper margin with dorsally directed, black-tipped process near middle, with ventrally directed, hook-like process near sub-middle on outer upper edge. Anal tube (Figs 27, 29) oval in dorsal view, ratio length to width 2.0:1. Aedeagus (Figs 30–32) with one pair of unequal long processes apically, processes with apex acute, sclerotized and pigmented. Phallobase sclerotized and pigmented at base, with numerous membranous lobes at apex.

Female genitalia. Anal tube (Fig. 34) round and large in dorsal view, ratio of length to width at middle approx. 0.7. First valvula (Fig. 35) sclerotized with seven differently sized teeth in lateral view. Second valvulae (Fig. 36) triangular, symmetrical in ventral view, connected at base and separated from 1/5 base. Third valvula (Fig. 37) with 2 sclerotized lobes, lateral lobe with 4 long spines at apex.

Figures 33–37. 

Tenguna plurijuga sp. n. 33 Genitalia ventral view of female 34 Genitalia dorsal view of female 35 First valvulae (lateral view) 36 Second valvulae (ventral view) 37 Third valvulae (lateral view). Scale bars 0.5 mm.

Holotype ♂, China, Guizhou, Institute of Entomology. XII. 2008, Light trap, Zhangyubo. Paratypes, 6♀♀, data same as holotype.

This new species is named for the Greek word “plurijuga” referring to aedeagus with numerous membranous lobes at apex.