Dialineura gorodkovi Zaitzev, 1971

Dialineura gorodkovi Zaitzev View in CoL

Specimens examined (44). YT: Carcross; Carcross, Bennett Lake dunes; Kluane National Park, Bullion Creek dunes; Nisling River; Sekulmun Lake, N end; Sekulmun Lake, Isaac Creek; Takhini River dunes 6.8 km NNE Kusawa Lake outlet; Whitehorse, 5 km N. AK: Becharof National Wildlife Refuge; Gates of the Arctic National Park; Kobuk Valley National Park. RBCM, UAM.

Database and literature records (93). YT: British Mountains; British Mountains, Firth River ( Fig. 14 View FIGURES 14–19 ); Carcross; Old Crow; Trout Lake. AK: Kobuk dunes, 145 km E Kotzebue; Nogahabara dunes, 105 km N Galena. CNCI, INHS, MEI, SEM, USNM.

Conservation status. Yukon: S4S5

Distributional notes. A Holarctic therevid, D. gorodkovi ranges in the western boreal region in North America. It is unknown in British Columbia but widespread in the Yukon, where it is recorded from scattered localities in the southwest (Carcross, Kluane, Kusawa Lake, Whitehorse) and far north (British Mountains, Old Crow). In Alaska, it inhabits dune systems in the north (Killik River, Kobuk, Nogahabara) and occurs south to the Alaska Peninsula; it probably is widespread in sandy sites over much of the state.

Ecoprovinces and other designations. YT: Boreal Cordillera, Taiga Cordillera. AK: Arctic Tundra, Beringia Boreal, Subarctic Tundra.

Range. Palaearctic-East Beringian. Russia and China east to Alaska, Yukon, Northwest Territories, and northern Manitoba ( Webb & Irwin 1991, Webb et al. 2013, Liu & Yang 2012).

Biological notes. Flight period: 23 May–25 July. Dialineura gorodkovi is reported in grassland tundra ( Fig. 14 View FIGURES 14–19 ) and on sand dunes or blowouts near, or away from, water ( Fig. 15 View FIGURES 14–19 ). One dune site on the Takhini River , Yukon, was sparsely vegetated with Carex sabulosa , Polemonium sp. , and Lupinus sp. (RBCM). Specimens were collected from under wood and rocks on a sandy lakeshore in Becharof National Wildlife Refuge, Alaska (UAM).