Drymeia phaonina, 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 : 185-187

Drymeia phaonina sp. nov.

Figs. 14 A–F

Diagnosis. This new species resembles a species of the genus Phaonia Robineau-Desvoidy, 1830 in general appearance, but its characters, especially those of the leg setae, are clearly those of Drymeia . Males can be distinguished as follows: small grey species, eye bare; proboscis thin, elongate; facial edge not projecting forward beyond the level of profrons; arista plumose; anepimeron and katepimeron bare; prealar absent or shorter then 2nd notopleural seta; dorsocentrals 2+3; mid and hind femora with rows of anteroventral and posteroventral setae; hind tibia without a ventral apical prong and posteroventral apical seta.

Etymology. The species name is based on its similarity to the genus Phaonia Robineau-Desvoidy.

Type material examined. Holotype male, RUSSIA: Кrasnoyarsk, W bank, Udachniy raion, environs, near Pinus forest stream, 28.vii.2009, K. Tomkovich ( ZMUM).

Paratypes: 3 males, same data as holotype ( ZMUM & SZMN).

Description. MALE. Length of body, 4.1–4.4 mm. Length of wing, 3.7–4.2 mm.

Head: Ground-colour black. Eye bare. Fronto-orbital plate and parafacial grey-silver pruinose; face grey, gena and lower occiput grey pruinose. Fronto-orbital plates separated by a narrow black frontal vitta. Frontal vitta less than width of postpedicel. Ocellar setae short. 6–7 pairs of frontal setae, including interstitials, reaching almost to anterior ocellus. Antenna black, postpedicel circa 2 times as long as wide. Arista swollen in basal sixth, shortplumose. Parafacial at level of insertion of arista as wide as width of postpedicel, narrowing below. Upper part of face with a small carina between antennal bases. In lateral view, facial edge not projecting forward beyond the level of profrons. Gena broad, depth below lowest eye-margin equal to length of postpedicel, not so densely setose and without a group of upcurved setae on anterior part of genal dilation or just with several such setae. Palpus black. Proboscis thin, elongate. Prementum of proboscis dusted, as long as palpus.

Thorax: Ground-colour black. Scutum matt, black with brownish-grey dust, viewed from in front with small undusted marks in front along suture, behind suture black with two short dusted vittae outside postsutural acrostichals and two long dusted vittae outside postsutural dorsocentrals which reach postalar callus; postpronotal lobe, notopleuron and postalar callus brownish-grey dusted. Ground-setulae short. Pleura brownish-grey dusted, without a distinct shining patch anteriorly on katepisternum and medially on meron. Anepimeron and katepimeron bare. Notopleuron bare. Prosternum bare. Acrostichals 1+2, presutural and first postsutural pairs shorter and weaker than the last pair. Dorsocentrals 2+3. Prealar absent or shorter then 2nd notopleural seta. Katepisternal setae 1+1(2). Scutellum dusted in posterior view, with two light spots on lateral margins.

Legs: Black. Fore tibia with 1 posteroventral seta on apical half. Fore tarsomeres 1–4 each without fine anteroventral and posteroventral hairs at tip, fore tarsomere 1 without posteroventrals at apex. Fore claws of all males blunt and much shorter then length of tarsomere 5, probably broken. Pulvilli as long as tarsomere 5. Mid femur straight, with rows of anteroventral and posteroventral setae, these longer on basal half; with 1 anterior and 2 posterodorsal to posterior preapical setae. Mid tibia with 0–1 anterodorsals and without anteroventrals; 3–4 posterodorsals, 2 posteroventrals on basal half. Hind femur with a row of anteroventral setae, posteroventral surface with a row of long setae on basal half and short setae on apical half. Hind tibia with 3 anterodorsals, 4 anteroventrals, 4 long posterodorsals, 3 short weak posteroventrals on apical half and with a row of short but strong posterodorsal setae on apical fourth; without a ventral apical prong, without posteroventral apical seta but with 1 anteroventral at the tip. Hind tarsomere 1 with 2 short ventral setae at base.

Wing: Faintly yellow, conspicuously so 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: Cylindrical, elongate; ground-colour black. Densely yellow-grey dusted with a narrow black median line that becomes narrower towards the tip of abdomen. Sternite 1 bare. Sternite 5 ( Fig. 14 C).

Terminalia : Figs 14 D–F.

FEMALE: unknown.

Distribution. Russia: Кrasnoyarsk.

Figures

FIGURE 14. Drymeia phaonina (paratypes), male. A. Habitus, lateral view. B. Abdomen, dorsal view. C. Sternite 5. D – F. Terminalia. D. Lateral view. E. Postero-lateral view. F. Posterior view.