Drymeia puchokana, Sorokina, Vera S. & Pont, Adrian C., 2015

Sorokina, Vera S. & Pont, Adrian C., 2015, A review of the genus Drymeia Meigen, 1826 (Diptera: Muscidae) in Russia, Zootaxa 4000 (2), pp. 151-206 : 188-190

Drymeia puchokana sp. nov.

Figs. 15 A–G

Diagnosis. This species is similar to D. segnis ( Holmgren, 1883) . Males of the new species can be distinguished as follows: prealar absent; anepimeron and katepimeron bare; eye with very short sparse hairs; proboscis thin, elongate; fore coxa not prolonged into a knob-like structure at apex; mid femur with the anteroventral setae restricted to a tuft of long apical wavy setae on apical third, without posteroventral setae except for a few very short setae on apical third; hind femur without posteroventrals; hind tibia without an apical ventral prong.

Etymology. The species name is based on the Russian word “puchok” that means “a tuft” and refers to the setae on mid femur.

Type material examined. Holotype male, RUSSIA: Altai Republic, Kosh-Agachskii raion, Ukok plateau, 6–8 km NE Maitobe mountain, 2600–2800 m, 49°34'N 87°43'E, 8.vii.2006, V. Sorokina ( SZMN).

Paratypes: 1 male, same data as holotype ( SZMN); 1 male, Altai Republic, Kosh-Agachskii raion, upper part of Naryn-Gol River, 2600–3000 m, 49º49'N 88º13'Е, 15–17.vii.2009, A. Barkalov ( SZMN).

Description. MALE. Length of body, 7.0 mm. Length of wing, 5.0 mm.

Head: Ground-colour black. Eye with very short sparse hairs. Fronto-orbital plate and parafacial silvery-white pruinose; face grey, gena and lower occiput dark grey pruinose. Fronto-orbital plates touching. Frons at narrowest point as wide as diameter of anterior ocellus. Ocellar setae short. 16–20 pairs of frontal setae, including interstitials, reaching almost to anterior ocellus. Antenna black, postpedicel 1.5 times as long as wide. Arista swollen in basal sixth, appearing almost bare, the longest hairs shorter than basal diameter of arista. Parafacial at level of insertion of arista slightly narrower than width of postpedicel. Upper part of face with a small knob or carina between antennal bases. In lateral view, facial edge little projecting forward beyond the level of profrons. Gena broad, depth below lowest eye-margin equal to length of postpedicel, densely setose and with a group of upcurved setae on anterior part of genal dilation. Palpus black. Proboscis thin, elongate, prementum dusted.

Thorax: Ground-colour black. Scutum matt, black, without distinct dusted vittae. Ground-setulae fine. Postpronotal lobe with some thin grey dust. Pleura thinly dusted, with a shining patch anteriorly on katepisternum and medially on meron. Anepimeron and katepimeron bare. Acrostichals 0+1, the presutural setulae in 4 irregular rows. Dorsocentrals 2+4. Prealar absent. Notopleuron setulose. Prosternum bare. Katepisternal setae 1+1, with 2–3 stronger setulae below posterior seta. Scutellum black and undusted in posterior view; without setulae on sides below the strong setae.

Legs: Black. Fore tibia with 2 submedian posteroventral setae. Fore tarsomeres 1–4 each with a short fine anteroventral and posteroventral hair at tip, and tarsomere 1 with 2–3 short posteroventrals at apex. Fore claws elongate, as long as length of tarsomere 5, pointed. Pulvilli as long as length of claws. Mid femur curved and flattened ventrally, with the anteroventral setae restricted to a tuft of long apical wavy setae on apical third; with a row of short anterior setae and a few fine posterior setae on basal ¼; posteroventral surface bare except for a row of short setae on apical third, shorter then femoral depth; 0 anterior and 1–2 posterior to posteroventral preapical setae. Mid tibia without any anterior setae; 5–7 posterodorsals and 3–4 posteroventrals. Hind femur without posteroventrals but with some fine setae on basal half of posterior surface; with 7 strong anteroventral setae on apical third. Hind tibia curved ventrad, with 6–7 weak posterodorsals on basal half, these no longer or slightly shorter than tibial depth; with rows of numerous short erect anterodorsals, those near base equal to tibial depth; 1– 3 weak anteroventrals; without an apical ventral prong, without dorsal and anterodorsal preapical setae; with 1 short anteroventral but 0 posteroventral apical seta. Hind tarsomere 1 with 2 short ventral setae at base.

Wing: With a slight brown tinge, darker at base. Basicosta and tegula black. Costa with weak spinules, without costal spine. Cross-vein r-m below the point where subcosta enters costa. Cross-vein dm-cu upright, almost straight, forming a right-angle with vein M. Calypters and margins yellow. Knob of haltere black.

Abdomen: Ground-colour black. Thinly grey dusted when viewed from behind. Syntergite 1+2 black; tergites 3–5 with an ill-defined undusted median vitta. Sternite 1 bare. Sternite 5 ( Fig. 15 G).

Terminalia : Figs 15 D–F.

FEMALE: Not known.

Distribution. Russia: Altai Mts.

Figures

FIGURE 15. Drymeia puchokana (paratypes), male. A. Habitus, lateral view. B. Head, anterior view. C. Abdomen, dorsal view. D – F. Terminalia. D. Postero-lateral view. E. Lateral view. F. Posterior view. G. Sternite 5.