Cheilosia armeniaca Stackelberg

Stahls, Gunilla & Barkalov, Anatolij V., 2017, Taxonomic review of the Palaearctic species of the Cheilosiacaerulescens-group (Diptera, Syrphidae), ZooKeys 662, pp. 137-171 : 141

Cheilosia armeniaca Stackelberg Fig. 2

Cheilosia armeniaca Stackelberg, 1960: 439.

Cheilosia armeniaca : Stackelberg and Richter 1968: 245; Barkalov 1993: 712.

Type locality.

East slope of Mountain Kapudschikh, Armenia.

Type material studied.

Holotype, ♂, pinned, in ZIN. The holotype is labelled: 'Vostochnyi skl. g. Kapudschikh, Armenia, V. Zaitzev, 17.VIII.1959' [East slope of mtn. Kapudschikh, Armenia]; 'Holotypus Cheilosia armeniaca Stackelberg’.

Description.

♂: Face in frontal view slightly divergent from level of antennal insertion to lower mouth edge, covered with very weak narrow strip of pollinosity (Fig. 2A). Facial knob rounded, not very protruding, shining. Parafacia pollinose in upper part and shining in lower part, in its broadest part nearly 1/2 the width (in its narrowest part about 1/3) of basoflagellomere. Frons slightly swollen, shining, with dense white wavy pile. Frontal angle ≈ 90° (Fig. 1, indicated with letter C). Lunula dark-brown. Antennal pits confluent. Vertical triangle with white pile. Eye-contiguity shorter than length of frons without lunula (A <B, see Fig. 1). Antenna dark-brown, basoflagellomere rounded (Fig. 2B). Arista with very short pile. Scutum, scutellum and pleura shining, with only very pale yellowish (almost whitish) pile, longer pile on pleura and posterior part of scutum distally wavy. Scutum and scutellum completely without black bristles or bristle-like pile. Postalar callus without black bristles. Anepisternum and katepisternum shining, with slight pollinosity, with white pile. Katepisternum with dorsal and ventral hair patches connected. Legs mainly black, knees narrowly yellow, tibiae also narrowly yellow at the extreme tip, 1-3 segments of meso- and 2-3 segments of metatarsi reddish (in the paratype metatarsi black with reddish tips of tarsomeres). Apical half of posterior surface of mesofemur with long light pile. Metafemur with short and long white pile ventrally. Halter yellow. Wing with all cross-veins darkened. Cell bm and cell cup of wing with areas bare of microtrichia. R4 + 5 of wing not distinctly curved. Abdomen oval, shining, densely punctated. Pile erect and white, longer on the lateral parts and shorter on the central parts of tergites. Sternite I with pollinosity, sternites II–IV shining. Pile erect, white on sternites. Hypopygium as on Fig. 2 C–E.

Size. Body length 8.5 mm.

Additional material studied.

Georgia 1♂; 'Georgia, Gornaia Tushetia, Omalo village 30.VII.1959 (Zaitsev)' [ZIN].

Distribution.

Caucasus: Armenia, Georgia*.

Remark.

Female unknown.