Rhamphomyia (Pararhamphomyia) ursinella Melander

Shamshev, Igor V., Sinclair, Bradley J. & Khruleva, Olga A., 2020, The empidoid flies (Diptera: Empidoidea, exclusive of Dolichopodidae) of the Russian Arctic islands and Svalbard Archipelago, Zootaxa 4848 (1), pp. 1-75 : 45-46

Rhamphomyia (Pararhamphomyia) ursinella Melander

( Fig. 48 )

Rhamphomyia ursina Malloch, 1919: 46 . Type-locality: Bernard Harbour, Nunavut, Canada.

Rhamphomyia ursinella Melander, 1928: 209 (replacement name for ursina Malloch , preoccupied by Oldenberg, 1915: 91). Other references: Sinclair et al., 2019: 71 (type material, redescription, full list of references).

Material examined. RUSSIA. Yakutia (New Siberian Islands): centre of Kotelny Island, upper flow of river Balykhtakh near mouth of river Tuguttakh , arctic desert on flowers, 15.vii.1973, KBG (20 ♂, 20 ♀, ZIN) .

Recognition. Mid-sized (wing length 3.6–4.5 mm) blackish flies. Male ( Fig. 48 ) holoptic; anepisternum with shiny spot; scutum with 2 narrow shiny median vittae (sometimes with less distinct subshiny vitta on supra-alar space); thorax black setose, presutural dc long, fine, 2–3-serial, acr similar to dc, biserial, 10–12 sctl; legs dark brown, hind basitarsus thickened apically, all tibiae and basitarsi clothed in dense long fine setae, hind tibia covered with these setae over entire dorsal face; wing infuscate, CuA+CuP incomplete, halter brown; abdomen very faintly pruinescent, almost shiny, with black setae; epandrium elongate, slightly constricted at middle; cercus elongate, about 2/3 length of epandrium, slightly constricted medially; phallus well exposed, filamentous, long, gently curved slightly beyond epandrium. Female with darker wing, short setose slender legs without pennate setae.

Distribution. Holarctic; R. ursinella is widespread across the low to high arctic region of North America, east of Hudson Bay ( Sinclair et al. 2019). In Eurasia, this species was found only from New Siberian Islands of Arctic Russia.

Figures

FIGURE 48. Rhamphomyia (Pararhamphomyia) ursinella Melander, male habitus, lateral view.