Arge azhendarovensis Vasilenko, 2010

3. Arge azhendarovensis Vasilenko, 2010

( Fig. 4 View FIGURE 4 )

Arge azhendarovensis Vasilenko, 2010: 681 (description), 682 (key), Figs 1–4 View FIGURE 1 View FIGURE 2 View FIGURE 3 View FIGURE 4 , ♀.

Current status. Arge azhendarovensis Vasilenko, 2010 .

Type locality. Russia, Kemerovo Province, Azhendarovo Lake , Azhendarovo Biostation of Kemerovo State University.

Holotype: ♀,Кем[еровскаЯ].обл[асть].,Крапивенский р[ай]-он.,БиостанциЯ Ажендарово,Кем[еровский]. Г[осударственный]У[ниверситет]., воЗле оЗ[ера]. Ажендарово, N 54 44 E 87 01 [ Russia, Kemerovo Province, Krapivenskiy district, Azhendarovo Biostation of Kemerovo State University , near Azhendarovo Lake , 54°44'N 87°01'E], 10–30.07.[20]08, [A.] Korschunov leg. // GoogleMaps Holotypus Arge azhendarovensis sp. nov., ♀, det. Vasilenko <red label> // ИЗ коллекции СЗМН (ИСИЭЖ СО РАН) г. Новосибирск [ ISEA] .

Description. Female ( Fig. 4 View FIGURE 4 ). Body length 8.0 mm; fore wing length 7.3 mm.

Colour. Head, thorax, two apical segments of abdomen and saw sheath black, with strong blue metallic lustre, other tergites of abdomen yellow-orange. Legs basally of femora and apex of tibiae black with blue metallic lustre, rest yellow, tarsi at apex brownish. Antennae black. Mandibles brown, reddish in middle, rest of mouthparts brown. Wing membrane distinctly yellow at base, slightly grey at apex, with indistinct brownish spot under pterostigma. Veins yellow at base of wings, brown in apical half, pterostigma brown, yellow at apex. Body smooth, shining with sparse scattered punctures and short silvery pubescence.

Head. Head behind eyes distinctly expanded. Postocellar area weakly convex, not bordered by sutures. POL: OCL: OOL as 1.0: 0.9: 0.9. Distance between eyes 1.4 × vertical diameter of eye. Vertical diameter of eye 1.5 × horizontal diameter. Median fovea broad, flat, not deep, dorsally not closed. Lateral carinae of median fovea sharp, slightly convergent ventrally, smoothed downwards, not joined. Supraclipeal area slightly convex in lateral view, with indistinct median carina. Clypeus flat, with distinct semi-circular notch 1/3 of length on ventral margin. Malar space 1.5 × diameter of frontal ocellus. Labrum densely punctured, with weak notch on ventral margin.

Antennae. Length of antenna 1.1 × maximum width of head. Flagellum weakly curved at base, narrowly rounded at apex, covered with dense short setae.

Thorax. Thorax weakly pubescent, smooth, shiny. Scutellum distinctly convex, broadly rounded along posterior margin.

Legs. Middle and hind tibiae with preapical spurs, tibial spurs simple. On hind leg basal tarsomere equal to three following ones together.

Wings. On fore wing cell 3Rs along anterior margin slightly longer than on posterior margin, to external margin 1.8 × wider than at base. Vein 3r-m angularly convex. Cell 2Rs 2.0 × cell 1Rs. Cell 1Rs evenly pubescent, setae short. Veins B and M of fore wing join up at same point on vein R. Wing margin between veins M and Cu ciliate, setae not longer than width of vein M.

Abdomen. Abdomen oval (in dorsal view), 1.6 × as long as maximum width. Saw sheath broad, ventrally slightly narrowed to apex, length 1.4 × as long as width, rounded at apex; laterally convex at ventral margin, bluntly rounded at apex. Inner surface of sheath with thick, short, blunt spines.

Lance in lateral view triangular, slightly curved, narrowed to apex, acuminate at apex, with distinct annuli in middle part, width almost equal lancet. Carina of apical part of dorsal margin high, only near apex with indistinct denticles, in other part almost smooth, remaining part of dorsal margin with longitudinal shallow fossa. Lancet almost subtriangular, slightly convex ventrally. Annuli almost straight, only at base and at apex slightly curved. Annular spines (ctenidia) short, simple, 0.3 × as long as width of annulus. Ventral margin with 18, slightly sclerotised, indistinct at apex serrulae. In apical third serrulae flat, broad, covered with denticles, in basal half bluntly rounded with indistinct. Between serrulae two unequal, long, straight pore canals of marginal sensilla.

Remark. Although the species has been described recently, the article does not include photo-illustrations and some important morphological characters, so a more detailed re-description is given here. The males are unknown.