Arge erythraea Gussakovskij, 1935

12. Arge erythraea Gussakovskij, 1935

( Fig. 17 View FIGURE 17 )

Arge erythraea Gussakovskij, 1935: 227 (key), 248–249 (description), 397 (key), 413–414 (description), ♂.

Tanyphatnidea sinensis (W.F. Kirby, 1882) Wei 1997: 36 , combination with Tanyphatnidea .

Current status. Tanyphatnidea sinensis (W.F. Kirby, 1882) (according to Taeger et al. 2010: 152).

Type locality. China, Sichuan, Tun River, near brige “Lyutinchao”.

Holotype: ♂, <golden circle> // Сычуань, р[ека]. Тунъ, мостъ ЛЮтинчао [ China, Sichuan, Tun River , near brige “ Lyutinchao ”], 14–15.04.[18]93, Потан[ин] [ G.N. Potanin leg.] // Arge erythraea , sp. nov., ♂, Gussakovskij det. // DEI-GISHym 89432 // HOLOTYPUS Arge erythraea Guss., 1935 , ♂, teste A. Taeger 2018 // Zoological Institute St. Petersburg INS_HYM_0001916 [ ZISP] .

Description. Male ( Fig. 17 View FIGURE 17 ). Body length 9.9 mm; fore wing length 8.6 mm.

Colour. Head, antennae, legs, scutellum, concave parts of pronotum and lower part of mesopleurae black. Pronotum and mesonotum reddish, abdomen yellow. Wings hyaline, slightly darkened at base, Cell C strongly darkened. Mouthparts, labrum and apex of mandibles light brown. Pubescence yellowish-white.

Antennae. Head. Head behind eyes slightly constricted. Distance between eyes 1.3 × vertical diameter of eye; eye with vertical diameter 1.7 × its horizontal diameter. Maximum width of head significantly less than width of thorax. Postocellar area not convex, with weak frontal and lateral furrows. POL: OCL: OOL as 1.3: 1.0: 1.1. Medial fovea wide, flat, in upper part with deep fossa and open towards frontal area. Lateral carinae absent, medial fovea limited by parallel keels of antennae sockets. Supraclypeal area not convex, ventrally bounded from clypeus by furrow between lower tentorial pit. Malar space nearly equal diameter of frontal ocellus. Clypeus medially strongly elongated, on ventral margin shallowly concave. Labrum with concave ventral margin, about same length as clypeus.

Antennae. Antennal length 2.7 × maximum head width; flagellum thin, weakly curved in middle, apex narrowly rounded. Antenna with fine and short setae, on frontal side erect, on posterior adhering.

Thorax. Mesonotum smooth, evenly covered spread setae, with glabrous band in lower part of mesopleuron; scutellum convex and narrowly rounded at apex.

Legs. All tibiae without preapical spurs. Basal tarsomeres of hind tarsus equal to next three combined.

Wings. In fore wing, cell 3Rs with anterior margin longer than posterior margin, strongly expanded externally. Vein 3r-m curved. Veins B and M of fore wing join up at same point on vein R. Membrane of cell 1Rs with dense, long setae. Wing margin between veins M and Cu ciliate, its setae equal to width of vein M.

Abdomen. Abdomen oval (in dorsal view), narrowed towards apex. Tergites smooth, with uniform sparse setae. Subgenital plate in ventral view triangularly narrowed to apex, at apex with distinct notch at middle of posterior margin.

Genitalia as in Fig. 17j View FIGURE 17 , gonostipes narrow. Harpe parallel at base, narrowed at apex, elongated, length 1.5 × width at base, densely covered with long setae. Valve of penis hook-shaped, dorsally bent at apex, flat, at apex narrowly rounded. Valviceps in dorsal view narrow, converging and narrowing towards apex, with small angular lateral lobe at base and rounded projection at apex; in lateral view on dorsal margin with large rounded medial notch and hook-shaped lobe at apex curved dorsally, ventrally at base weakly pigmented with rounded lobe. Dorsal process (ergot) short, faintly visible.

Remark. The original description is given on a single specimen ( holotype).