Arge modesta Konow, 1905

18. Arge modesta Konow, 1905

( Figs 24 View FIGURE 24 , 25 View FIGURE 25 )

Arge modesta Konow, 1905: 157 , ♂, ♀.

Current status. Arge ochropus (Gmelin, 1790) (synonymized by Konow 1906: 328).

Type locality. Tajikistan, Vorukh.

Lectotype (designated by Zhelochovtsev, 1976: 72): ♂, Ворухъ [ Tajikistan, Vorukh , 39°84'N 70°62'E] [lost].

Paralectotypes: ♂, <golden circle> Ягнобъ [ Tajikistan, Yagnob River ] // 64. // 21. // Arge modesta sp. nov ., ♂, F. Konow descr[ibed]., A. Zhelochovtsev det. 1968 // Arge ochropus Gmelin, 1790 , det. Basov S.A., 2022 // Paralectotypus Arge modesta Konow, 1905 , ♂, des[ignated]. Zhelochovtsev A.N., 1967, teste Basov S.A., 2025 <red label> // Zool [ogical]. Mus [eum]. Moscow [ ZMMU]; ♀, same labels, but // 61. // 21. [ ZMMU]; ♀, <golden circle> // Ворухъ [ Tajikistan, Vorukh ] // 52. // 20. // Arge modesta sp. nov., ♀, F. Konow descr[ibed]., A. Zhelochovtsev det. 1968 // Arge ochropus Gmelin, 1790 , det. Basov S.A., 2022 // Paralectotypus Arge modesta Konow, 1905 , ♀, des[ignated]. Zhelochovtsev A.N., 1967, teste Basov S.A., 2025 <red label> // Zool [ogical]. Mus [eum]. Moscow [ ZMMU]; ♀, <silver circle> // Фанъ [ Tajikistan, Phan ] // 96. // 21. // Paralectotypus Arge modesta Konow, 1905 , ♀, des[ignated]. Zhelochovtsev A.N., 1967, teste Basov S.A., 2025 <red label> // Zool [ogical]. Mus [eum]. Moscow [ ZMMU] .

Description. Female ( Fig. 24 View FIGURE 24 ). Body length 9.5 mm; fore wing length 8.6 mm.

Colour. Head, thorax, antennae black, shining. Legs yellow, on fore and middle legs coxae, trochanters and base of femora, on hind legs trochanters black; apices of all tibiae and tarsomeres black. Abdomen yellow, narrow band along ventral margin of saw sheath black. Mouthparts brown. Wings yellow, cell Sc black. Veins C, Sc, R, base of Rs and pterostigma black, rest yellow, light brown towards apex. Pubescence of thorax black, on head brown, on abdomen and legs yellowish-white.

Head. Head behind eyes slightly expanded. Distance between eyes 1.4 × vertical diameter of eye; eye with vertical diameter 1.9 × its horizontal diameter. Postocellar area slightly convex, with lateral furrows. POL: OCL: OOL as 1.0: 1.0: 1.1. Medial fovea broad, triangular, flat, with weak rounded pit in upper part, open. Lateral carinae sharp, converging downwards, but not joining and not forming median carina. Supraclypeal area weakly convex, densely uniformly punctured. Malar space nearly equal diameter of frontal ocellus. Clypeus smooth, shiny, sparsely punctate, with deep, more than half length medial notch on ventral margin. Labrum with flat, weakly rounded ventral margin.

Antennae. Antennal length 1.3 × maximum head width; flagellum weakly curved at base, narrow, apex narrowly rounded; its setae short, dense, closely adherent.

Thorax. Mesopleuron in lower part with glabrous band; scutellum convex, broadly rounded at apex.

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

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

Abdomen. Abdomen oval (in dorsal view), to apex distinctly narrowed; tergites in basal half shining, almost glabrous; in apical part pubescent. Saw sheath 2.4 × as long as wide, simple, narrow, triangular, with apex pointed at an acute angle (ventral view), on inner surface without spines; in lateral view apex bluntly rounded, medially strongly convex on ventral margin.

Lance in lateral view sickle-shaped, narrow, distinctly pointed at apex, with large, sparse (13 distinct) annuli. Maximum width of lance weakly greater than lancet width. Carina of apical part of dorsal margin with weakly developed, but with large irregularly shaped denticles, remaining part of dorsal margin with longitudinal strongly fossa. Lancet sickle-shaped, clearly acuminate at apex. Annuli straight and dorsally inclined towards apex. Annular spines (ctenidia) thick, wide and blunt, largest ones longer than width of annulus. Ventral margin with 16 well-distinct serrulae. Serrulae without spiculella, triangular, acute, turned backwards, with large irregular denticles along anterior margin. Between serrulae without pore canals of marginal sensilla.

Male ( Fig. 25 View FIGURE 25 ). Body length 7.9 mm; fore wing length 7.3 mm.

In colouration as female. Flagellum posteriorly yellowish in middle. Distance between eyes 1.3 × vertical diameter of eye; eye with vertical diameter 1.6 × its horizontal diameter. POL: OCL: OOL as 1.0: 1.0: 1.2. Antennal length 2.0 × maximum head width; flagellum weakly curved at base, with long erect setae on anterior surface. Subgenital plate in ventral view with rounded posterior margin.

Genitalia as in Fig. 25j View FIGURE 25 , gonostipes narrow, parallel. Harpe elongate, rounded at apex, 1.4 × as long as width at base, evenly covered by long setae. Valve of penis subtriangular, with narrowly rounded lobe at apex. Valviceps in dorsal view slightly broadened towards apex, with lateral lobe in middle; in lateral view apex with triangular, strongly sclerotised lobe, curved dorsally with large pores along external margin; ventrally with large, elongated, at apex rounded and weakly pigmented, poreless lobe and deep notch at base. Dorsal process (ergot) short and strait.

Remark. The lectotype designated by Zhelochovtsev (1976) has not been found in the ZMMU collection.