Arge cingulata Jakowlew, 1891

8. Arge cingulata Jakowlew, 1891

( Fig. 11 View FIGURE 11 )

Arge cingulata Jakowlew, 1891: 16–17 , ♀; Taeger et al. 2010: 127.

Current status. Arge cingulata Jakowlew, 1891 .

Type locality. Tajikistan, Darvaz (Vakhia).

Lectotype (designated here): ♀ <golden circle> // ВахiЯ, 2500 m. [ Tajikistan, Darvaz, Vakhia], 1.VII.[18]89, Громбчевский [ B.L. Grombchevsky leg.] // к.[оллекциЯ] А. Яковлева [Collection of A.I. Jakowlew] // DEIGISHym 89429 // Syntypus Arge cingulata Jakowlew, 1891 , ♀, teste A. Taeger 2018 // Zoological Institute St. Petersburg INS_HYM_0001909 [ ZISP] .

Paralectotypes: ♀, same label as in lectotype // DEI-GISHym 89428 // Zoological Institute St. Petersburg INS_HYM_0001910 [ ZISP] ; ♀, same label as in lectotype but GISHymID 4560, ExID 49591, ArtNr DEI 1176 About DEI [ Senckenberg Deutsches Entomologisches Institut Müncheberg , Germany] .

Description. Female ( Fig. 11 View FIGURE 11 ). Body length 8.0 mm; fore wing length 7.7 mm.

Colour. Body entirely black with faint light blue lustre, only 3rd, 4th and base of 5th segment of abdomen orange-red (tergite 4 with small dark medial spot). Legs black, only tibiae yellowish-white, their apex on front and middle legs indistinctly, and on hind distinctly darkened, but only below preapical spurs. Wings hyaline, slightly greyish, with only small indistinct spot below pterostigma. Veins C, Cu and A partly yellow-brown, others and pterostigma blackish-brown. Mandibles in middle red-brown, mouth parts brownish. Body covered with sparse short whitish setae.

Head. Head behind eyes slightly expanded. Distance between eyes 1.4 × vertical diameter of eye; eye with vertical diameter 2.0 × its horizontal diameter. Postocellar area weakly convex, without anterior and lateral furrows. POL: OCL: OOL as 1.0: 1.0: 1.4. Medial fovea wide, flat, barely depressed and open towards frontal area. Lateral carinae almost parallel tapering downwards and forming short median carina. Supraclypeal area roundly convex, in middle with indistinct medial carina. Malar space nearly equal diameter of frontal ocellus. Clypeus with distinct semi-circular median excision, half of its width. Labrum ventrally slightly concave.

Antennae. Antennal length 1.2 × maximum head width; flagellum distinctly curved at base, apex rounded. Antennal setae short and densely adherent.

Thorax. Mesopleuron smooth, strongly shining, evenly covered spread setae; scutellum flat and narrowly rounded at apex.

Legs. Middle and hind tibia with preapical spurs; tibial spurs simple. Basal tarsomeres of hind tarsus longer (9: 8) than next three combined.

Wings. In fore wing, cell 3Rs with anterior margin approximately equal to posterior margin; distinctly widened at external margin. Vein 3r-m slightly curved. Veins B and M of fore wing join up at same point on vein R. Membrane of cell 1Rs sparse short setae. Wing margin between veins M and Cu ciliate, its setae longer than width of vein M.

Abdomen. Saw sheath 1.5 × as long as wide, simple, triangular, distinctly narrowed towards apex, apex rounded ventrally; in lateral view narrow, convex on ventral margin, bluntly rounded at apex; inner surface distinctly concave, with short blunt thick spines.

Lance in lateral view triangular, distinctly narrowed towards apex, with indistinct annulus in middle; about width of lancet. Carina of apical part of dorsal margin clearly defined, with finely, irregular and indistinct denticles, remaining part of dorsal margin with longitudinal shallow fossa. Lancet with straight dorsal and slightly convex ventral margin. Annuli curved, almost perpendicular to dorsal margin, in apical part indistinct. Annular spines (ctenidia) short, simple, 0.3 × as long as width of annulus. Ventral margin with 23 well-defined, weakly sclerotised serrulae. Serrulae triangular, with short posterior margin, rounded at apex, their margin with fine denticles; in apical part of lancet serrulae flat and less distinct. Between serrulae two unequal, short and straight pore canals of marginal sensilla.

Remark. The males of this species are not given in the original description, but they were later described by Gussakovskij (1935). In contrast to females, they have completely black abdomen with distinct metallic lustre.

The original description is based on three females from “ Vakhia ( Tajikistan, Darvaz)” (translated from Jakowlew, 1891: 17) . Two females were found in ZISP, one of them is here designated as the lectotype .