Arge corallina Gussakovskij, 1935

10. Arge corallina Gussakovskij, 1935

( Figs 14 View FIGURE 14 , 15 View FIGURE 15 )

Arge corallina Gussakovskij, 1935: 227 (key), 246–247 (description), 397 (key), 411–412 (description), ♂, ♀; Taeger et al. 2010: 128.

Current status. Arge corallina Gussakovskij, 1935 .

Type locality. China, Sichuan, Kangting.

Lectotype (designated here): ♀ <golden circle> // Сычуань, ТацЗинлу [ China, Sichuan, Kangting , 30°02'N 101°57'E], 12.06.[18]93, Потанин [ G.N. Potanin leg.] // Arge corallina sp. nov., ♀, Gussakovskij det. // DEIGISHym 89434 // GoogleMaps SYNTYPUS Arge corallina Guss., 1935 , ♀, teste A. Taeger 2018 // Zoological Institute St. Petersburg INS_HYM_0001913 [ ZISP] .

Paralectotype: ♂, same labels as in lectotype, but 15.07.[18]93 // DEI-GISHym 89433 // Zoological Institute St. Petersburg INS_HYM_0001914 [ ZISP] .

Description. Female ( Fig. 14 View FIGURE 14 ). Body length 9.6 mm; fore wing length 9.3 mm.

Colour. Head, antennae black with faint light blue metallic lustre. Legs black, coxae, small spot on external surface of femur of fore leg, most part of femora of middle and hind leg, except base and apex, and small ring in middle of hind tibiae orange-yellow. Spurs yellow. Mouthparts yellow, mandibles at apex reddish. Thorax orange, concave parts of metanotum black. Abdomen yellow. Wings transparent, cell C and wing base darkened, veins and pterostigma dark brown. Pubescence silvery-white.

Head. Head behind eyes not expanded. Distance between eyes 1.4 × vertical diameter of eye; eye with vertical diameter 1.7 × its horizontal diameter. Postocellar area not convex, with weak lateral furrows. POL: OCL: OOL as 1.4: 1.0: 1.5.. Medial fovea wide, flat, in upper part with deep fossa and open towards frontal area. Lateral carinae blunt, and below base of antennae indistinct. Supraclypeal area not convex, without distinct carina. Malar space nearly equal diameter of frontal ocellus. Clypeus slightly concave ventrally. Labrum with concave ventral margin.

Antennae. Antennal length 1.6 × maximum head width; flagellum weakly curved at base, apex narrowly rounded. Antenna densely covered with short setae.

Thorax. Mesonotum smooth, shiny, with glabrous ventral band; scutellum flat and broadly rounded at apex.

Legs. Middle and hind tibia with preapical spurs; tibial spurs simple. Basal tarsomeres of hind tarsus nearly equal to next three combined.

Wings. In fore wing, cell 3Rs with equal anterior and posterior margin, 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 setae. Wing margin between veins M and Cu not ciliated and without glabrous band along margin.

Abdomen. Abdomen oval (in dorsal view), narrowed towards apex. Saw sheath length 1.5 × its width in ventral view, parallel, simple, rounded at top; straight, slightly concave at base, bluntly rounded at apex in lateral view.

Lance in lateral view convex, swollen in apical third. Maximum width of lance equal to or slightly less than lancet width. Carina of apical part of dorsal margin very high and strongly pronounced, with fine indistinct denticles, remaining part of dorsal margin with longitudinal fossa. Lancet with straight dorsal and convex medially ventral margin, apex blunt. Annuli nearly straight, apically slightly curved, distinguishable almost up to apex. Annular spines (ctenidia) short, simple, several times shorter than width of annulus. Ventral margin with 23 well-distinct, strongly sclerotised serrulae. Serrulae smooth, squarish, with convex rounded posterior margin. Between serrulae one (less often two unequal) straight pore canals of marginal sensilla.

Male ( Fig. 15 View FIGURE 15 ). Body length 8.5 mm; fore wing length 8.0 mm.

In colouration as female. Head behind eyes weakly constricted. Distance between eyes 1.3 × vertical diameter of eye; eye with vertical diameter 1.9 × its horizontal diameter. Antennal length 2.3 × maximum head width. POL: OCL: OOL as 1.4: 1.0: 1.3. Subgenital plate in ventral view with rounded posterior margin.

Genitalia as in Fig. 15j View FIGURE 15 , gonostipes very narrow and parallel. Harpe oval, only slightly elongated, rounded at apex, covered with sparse fine setae. Valve of penis simple, very narrow, bluntly truncated at top. Valviceps in dorsal view narrow, convergent and narrowed towards apex, at apex bent laterally; in lateral view linear, with small lobe at base of ventral margin and thin membranous one in middle, bluntly truncate at apex. Dorsal process (ergot) absent. Near valvura canal orifice site, long triangular strongly sclerotised outgrowth half of valviceps length.

Remark. The original description is based on 4 female and 1 male syntypes originating from several collection sites in the “Sychuan’, Tatczinlu ( Sichuan, Kangting) and Fubian (Fubianxiang) (translated from Gussakovskij 1935: 412)”. One female and one male were found in ZISP. The female from Kangting is here designated as the lectotype.