Gimnomera albipila ( Zetterstedt, 1846 )

Ozerov, A. L., 2019, A review of the genus Gimnomera Rondani, 1866 (Diptera: Scathophagidae) of Russia, Russian Entomological Journal 28 (2), pp. 195-218 : 199-200

Gimnomera albipila ( Zetterstedt, 1846)

Figs 9 , 27–29 .

albipila Zetterstedt, 1846: 2021 ( Cordylura ). Type-locality: “Lapponia Lulensi ad Qvickjock” ( Sweden).

lucida Becker, 1900: 53 ( Microprosopa ). Type-locality: “Kantaika” (Khantaika, lower Yenisey, Russia).

The species was recorded for Russia from Siberia without indicating specific locality [ Gorodkov, 1970].

MATERIAL. Krasnoyarsk Krai: Kresty (71.9158ºN 102.1238ºE), 11.VII.1976, A. Rasnitsyn, I. Sukacheva (1 ♂, ZMUM); Tyumen’ Oblast: Neroyka (ca. 64.57ºN 59.67ºE), 700 m , 30. VI .–3.VII.1990 , Malozemov (1 ♂, ZISP); same, 450 m, 24– 27. VI .1990 , Malozemov (1 ♂, ZISP).

DESCRIPTION. Male. Small-sized flies (2.4–3.5 mm long).

Head. Frontal vitta yellow completely or black in upper half, matt; fronto-orbital plate black in upper half and yellow in lower half or black completely, whitish dusted. Ocellar triangle black. Face yellow or blackish, whitish dusted. Parafacial and gena yellow, whitish dusted. Postcranium black, subshining, but median occipital sclerite greyish dusted. 2–3 orbitals, 3–4 frontals, 1 ocellar, 1 very small postocellar, 1 inner vertical, 1 outer vertical (all setae yellow); 1–2 pairs of yellow vibrissae present. Scapus and pedicel yellow. Postpedicel black, no more than 1.5 times as long as wide. Arista black. Palpus yellow.

Thorax black, greyish dusted, but scutum shining. Acrostichals as hairs in two rows, dorsocentrals 1+2, intra-alars 1+(0–1), supra-alars 1+2, 1 postpronotal, anterior margin of postpronotum without short erect black spinules, notopleurals 2, 1 postalar (all setae yellow). Proepisternum with 1 seta near lower margin. Proepimeron with 1 seta and several hairs. Anepisternum with 2 yellow setae near posterior margin. Anepimeron bare. Scutellum black, shining, with a pair of lateral scutellar and a pair of apical scutellar setae.

Legs yellow completely or slightly darkened. Hairs and setae of all legs yellow. Fore femur with a row of posterodorsal setae. Fore tibia with 1 preapical dorsal seta. Mid femur with 0–1 preapical posterodorsal seta. Mid tibia with 0–1 anterodorsal, 1 preapical dorsal setae and a ring of apical setae. Hind femur with 0–2 anterodorsal setae in apical half. Hind tibia with 1 anterodorsal, 1 preapical dorsal and 1 apical anteroventral setae.

Wing clear; veins brownish. Vein R 1 setulose on apical half of dorsal surface. Calypters, margins of calypters, and halteres pale whitish.

Abdomen black, subshining. Male sternite 4 small rectangular, wider than long; sternite 5 with long triangular lateral lobes ( Fig. 8 ). Epandrium, cercal plate and surstyli as in Figs 24–26 .

DISTRIBUTION. Russia: Krasnoyarsk Krai, Tyumen’ Oblast. — Scandinavia [ Šifner, 2008] .

Figures

Figs 8–13. Male sternites 4 (lower) and 5 (upper) of Gimnomera: 8 — G. alanica (Ozerov); 9 — G. albipila (Zetterstedt); 10 — G. castanipes (Becker); 11 — G. cuneiventis (Zetterstedt); 12 — G. dorsata (Zetterstedt); 13 — G. hirta (Hendel). Рис. 8–13. Стерниты 4 (вниЗу) и 5 (вверху) самца Gimnomera: 8 — G. alanica (Ozerov); 9 — G. albipila (Zetterstedt); 10 — G. castanipes (Becker); 11 — G. cuneiventis (Zetterstedt); 12 — G. dorsata (Zetterstedt); 13 — G. hirta (Hendel).

Figs 24–32. Epandrium, cercal plate and surstyli of Gimnomera spp.: 24–26 — G. alanica (Ozerov); 27–29 — G. albipila (Zetterstedt); 30 –32 — G. castanipes (Becker); 24, 27, 30 — dorsolateral view; 25, 28, 31 — lateral view; 26, 29, 32 — dorsal view. Рис. 24–32. Эпандрий, церки и сурстили Gimnomera spp.: 24–26 — G. alanica (Ozerov); 27–29 — G. albipila (Zetterstedt); 30–32 — G. castanipes (Becker); 24, 27, 30 — дорсолатерально; 25, 28, 31 — сбоку; 26, 29, 32 — сверху.