Pisacha falcata sp. nov.

(Figs 79–82, 87–99, 117, 122)

Description. Length, male (N=1) (including tegmen): 12.3 mm, length of tegmen: 10.5 mm; female (N=2) (including tegmen):13.2–13.4mm, length of tegmen: 11.8–12.0 mm.

General color fulvous. Vertex dark brown with median carinae canescent. Frons brown, lateral area with obscure dark brown dots, median carina pale yellow, lateral carinae and margins black brown, apical angles black brown, near upper margin with two black spots. Clypeus brown, median carina brown, with several oblique short fuscous stripes on each side of median carina. Ocelli red. Eyes black brown. Antenna tawny, pedicel with sensilla grey. Gena light brown with a big black mark on apical angle. Pronotum dark brown, median carinae pale offwhite. Mesonotum fuscous at median area, pale fulvous laterally, median carina canescent, lateral carina and and its outside black. Tegmina transparent, venation dark brown.

Vertex 3.4 times wider than long in middle line, anterior margin slightly obtusely convex, posterior margin strongly concave (Figs 79, 81). Frons long, 1.5 times longer than wide at widest part; upper margin deeply concave, median carina indistinct, disappeared near apical one-third (Fig. 82). Pronotum about 1.9 times longer than vertex in middle line, anterior margin obtusely convex, reaching the level of upper points of eyes, posterior margin angularly concave (Figs 79, 81). Mesonotum large, 3.0 times as long as vertex and pronotum combined in middle line, lateral carinae not reaching posterior margins, present at about apical two-thirds (Fig. 81). Tegmina transparent, clavus with 7–8 transverse veinlets between the suture and its longitudinal vein, 0–2 transverse veinlets between two claval veins (Fig. 79). Spinal formula of hind leg 11–11–2.

Male terminalia. Anal tube with ventral margin sinuate; 2.3 times longer than widest part in dorsal view, apical margin obtusely convex (Figs 87, 88). Phallobase with dorso-basal portion expanding apically, apico-ventral angles sharp. Dorso-lateral phallobase lobes with apical portion have about 40 small spikes on each side surface; lateral apex with a pair of short bifurcate processes, upper branches very small, about one fifth of the under branches. Ventral phallobase lobe with apical portion nearly square, apical margin straight (Figs 90, 91, 117, 122). Phallus with a pair of short processes directed cephalad, but deflexed near apex, and two processes nearly falcate with tip points to each other in ventral view (Figs 90, 91, 117, 122). Pygofer with posterior margin distinctly convex near dorsal third (Fig. 87).

Female terminalia. Anal tube nearly round in dorsal view, apical margin weakly convex. Anal column relatively long (Fig. 92). Gonoplac bearing about 6–7 rows of denticles in posterior view (Fig. 94). Anterior connective lamina of gonapophyses VIII with 10 teeth (Fig. 97). Sternum VII with posterior margin weakly convex medianly (Fig. 99).

Type material. Holotype: male, China, Chongqing Municipality, Jinyunshan Mountain, 18 July 2011, coll. Menglin Wang.

Paratypes: 1 female, China, Sichuan Province, Wenchuan County, Yingxiu Town, 1000m, 15 September 1983, coll. Xuezhong Zhang; 1 female, China, Sichuan Province, Emei Mountain, 800 –1000m, 14 September 1957, coll. Youcai Lu.

Diagnosis. This species is different from all other species in this genus by 1) mesonotum with lateral carinae present at about apical two-thirds; 2) dorso-lateral phallobase lobes with apical portion have about 40 small spikes on each side surface; lateral sides with a pair of short bifurcate processes, upper branches very small, about one fifth of the under branches; 3) phallus with the ventral hooks short, directed cephalad, but deflexed near apex, and two hooks nearly falcate with tips point to each other in ventral view.

Etymology. The specific epithet derived from the Latin “ falcata ”, referring to ventral hooks of phallus falcate in ventral view.