Arge bucharica Gussakovskij, 1935

5. Arge bucharica Gussakovskij, 1935

( Figs 6 View FIGURE 6 , 7 View FIGURE 7 )

Arge bucharica Gussakovskij, 1935: 232 (key), 257–258 (description), 402 (key), 416–417 (description), ♂, ♀; Taeger et al. 2010: 126.

Current status. Arge bucharica Gussakovskij, 1935 .

Type locality. Uzbekistan, Samarkand Province, Aman-Kutan.

Lectotype (designated here): ♀, <golden circle> // Аман-Кутан [ Uzbekistan, Samarkand Province , Aman-Kutan, 39°18'N 66°56'E], 6.07.[19]32, В. Гуссаковский [ V. V. Gussakovskij leg.] // Arge bucharica Gussakovskij , sp.n., ♀, Gussakovskij det. // DEI-GISHym 89405 // GoogleMaps SYNTYPUS, Arge bucharica Guss., 1935 , ♀, teste A. Taeger 2018 // Zoological Institute, St. Petersburg INS_HYM_0001902 [ ZISP] .

Paralectotypes: ♂, <golden circle> //Кала и Хум, ДарваЗ, в[осточнаЯ].Бухара [ Tajikistan, Gorno-Badakhshan Autonomous Region, Qal’ai Khumb ], 1–7.06.[18]97, КаЗнаков [ Kaznakov leg.] // Arge nov. spec ., ♂, Konow det. // DEI-GISHym 89424 // SYNTYPUS, Arge bucharica Guss., 1935 , ♂, teste A. Taeger 2018 // Zoological Institute St. Petersburg INS_HYM_0001903 [ ZISP]; ♂, <golden circle> // М[ежду]. Дашты-каЗы и Кштудаком [ Tajikistan, Sughd Province, between Dashty-Kazy village and Kshtudak River], 23.05.[18]88, А. Семенов [ А. Semenov] // Пойм[ан]. высоко над Заравшаном, на горном крЯжъ, на цв[етах]. какого-то Зонтичного. А.С. [ Caught high above Zaravshan , on a mountain ridge, on some Umbrelliferae flowers. A. Semenov] // к[оллекциЯ]. А. Яковлева [ Collection of A.I. Jakowlew] // Arge bucharica Gussakovskij , sp. nov., ♂, Gussakovskij det. // DEI-GISHym 89423 // SYNTYPUS, Arge bucharica Guss., 1935 , ♂, teste A. Taeger 2018 // Zoological Institute St. Petersburg INS_ HYM_0001904 [ ZISP] ; ♂, <golden circle> // Табидара-Загырдешт, в. Бухара [ Tajikistan, “ Tabidara-Zagyrdesht ”], 1.06.[18]97, КаЗнаковъ [ Kaznakov] // Arge nov. spec ., ♂, Konow det. // DEI-GISHym 89406 // SYNTYPUS, Arge bucharica Guss., 1935 , ♂, teste A. Taeger 2018 // Zoological Institute St. Petersburg INS_HYM_0001905 [ ZISP] .

Description. Female ( Fig. 6 View FIGURE 6 ). Body length 9.5 mm; fore wing length 8.4 mm.

Colour. Head and thorax black with bronze-green metallic lustre, abdomen yellow, base of first and lateral spots on tergites 5–7 black with slight blue lustre. Antennae orange-brown. Legs up to knees black, with slight bronze-green lustre, apex of femora, tibiae and tarsi dirty-white, hind tibiae at apex brown not reaching preapical spurs. Wings completely hyaline, without spots, veins pale brown, base of veins C and A whitish; pterostigma light brown, distinctly whitish at base. Labrum orange-brown, mandibles brown at base, red-orange towards apex, mouthparts orange. Body covered with sparse silvery-yellowish pubescence.

Head. Head behind eyes not widened. Distance between eyes 1.4 × vertical diameter of eye. Vertical diameter of eye 1.6 × as long as its horizontal diameter. POL: OCL: OOL as 1.0: 1.0: 1.0. Median fovea small, developed only in upper part, not deep. Lateral carinae of median fovea thick, blunt, not joined dorsally, early smoothed ventrally, weakly convergent, not joined and not forming median carina. Supraclypeal area convex, smooth with sparse dots. Malar space equal to diameter of frontal ocellus. Clypeus flat, distinctly semi-circularly incised at middle of ventral margin for third of its width. Labrum rounded at apex.

Antennae. Antennae 1.3 × maximum width of head. Flagellum slightly curved at base, bluntly rounded at apex, covered with short, densely adherent, dense setae.

Thorax. Mesopleuron smooth, glabrous below. Scutellum flat, bluntly rounded along hind margin.

Legs. Legs with preapical spurs on middle and hind tibiae, tibial spurs simple. Hind basotarsomer slightly longer than three following together.

Wings. Cell 3Rs with anterior margin equal to posterior margin, to external margin slightly widened. Vein 3r-m slightly roundly curved. Vein B of fore wing joins vein R well before (twice longer than vein Sc) junction point of vein M. Cell 1Rs with very sparse and short setae. Wing margin between M and Cu not ciliate, glabrous.

Abdomen. Abdomen oval (in dorsal view), convex on sides, 1.7 × as long as width. Saw sheath thick, ventrally parallel-sided, bluntly rounded at end, laterally blunt, rounded, almost straight along ventral margin; dorsally notched along inner edge, with short thick and blunt spines along rest.

Lance in lateral view strongly convex, narrowed at base, uniformly covered with annuli almost to base. Maximum width of lance greater than lancet width. Carina of apical part of dorsal margin with finely, irregular and indistinct denticles, remaining part of dorsal margin with longitudinal shallow fossa. Lancet with straight dorsal and convex medially ventral margin. Annuli nearly straight and dorsally inclined towards apex, in apical part indistinct.Annular spines (ctenidia) short, simple, several times shorter than width of annulus. Ventral margin with 17 well-distinct, strongly sclerotised serrulae. Serrulae smooth, with only indistinct denticles. In apical third serrulae triangular, oblique, rounded at apex, rest of serrulae papillate, bluntly rounded. Between serrulae one (rare two unequal) short and straight pore canals of marginal sensilla.

Male ( Fig. 7 View FIGURE 7 ). Body length 8.0 mm; fore wing length 6.8 mm.

Colouration as female, but thorax with bronze-greenish shine, on abdomen tergites 1–2 and 5–7, and sometimes tergite 8 completely or partially black with blue metallic lustre. Hind tarsomeres brownish at apex. Mandibles orange in middle, brown at apex and base; labrum black. Antennae black, twice as long as maximum width of head, slightly curved at base, narrowly rounded at apex, along front margin with protruding stiff setae not more than width of flagellum frontally. Distance between eyes 1.3 × vertical diameter of eye. POL: OCL: OOL as 1.0: 0.7: 1.0. Subgenital plate in ventral view with rounded posterior margin.

Genitalia as in Fig. 7j View FIGURE 7 , gonostipes broad, convex on inner margin, tapering towards apex. Harpe parallel at base, narrowed at apex, elongated, length 1.5 × width at base, densely covered with tiny setae. Valve of penis with valviceps sickle-shaped, curved at apex dorsally, flat, bluntly rounded at apex. Valviceps in dorsal view narrow, linear, slightly broadened at base and at apex; in lateral view very narrow and curved, with large dorsal notch in middle, rounded at apex, with many large pores. Dorsal process (ergot) clearly visible, short and straight.

Remark. The colouration of the abdomen is strongly variable. In known series females it varies from small lateral spots on tergites 5 and 6 to full stripes along the basal margin on tergites 5 and 6 and spots on other tergites. In turn, in males, it varies from partially darkened basally tergites 1, 5 and 6 to completely black tergites (usually 1–2 and 5–7) and lateral spots or stripes along the bases of other tergites.

The original description is based on one female and three male syntypes originating from several collection sites in the “mountains of Samarkand oblast (upper region of Zaravshan, Zeravshan ridge) and eastern Bukhara (Darvaz) (translated from Gussakovskij 1935: 417). One female and three males were found in ZISP. The female from Samarkand province is here designated as the lectotype .