17. Piguetiella blanci (Piguet, 1906)

Nais blanci Piguet, 1906

Geographic distribution.

Western Palaearctic, NE of the USA. In the Russian tundra: Murmansk Region (Timm and Popchenko 1978, Finogenova 1975), the Pechora River delta (Baturina 2018), the Vashutkiny lakes system (Finogenova 1966), Lake Ambarty and some other lakes in the Korotaikha River basin (Popchenko 1978), lakes in the Kara River basin (Baturina and Loskutova 2010).

Location.

Lake Bolshoy Kharbey (67°34'34.3"N, 62°52'17.4"E; 67°34'N, 62°57'E; 67°34'3.5"N, 62°52'17.9"E; 67°33'48.2"N, 62°55'2.6"E; 67°32'49.9"N, 62°53'40.1"E); Lake L (67°35'44.5"N, 62°49'39.2"E), Lake K2 (67°32'56.1"N, 62°51'39.7"E); Lake K1 (67°36'27.6"N, 62°51'58.4"E; 67°36'17.6"N, 62°52'35"E); Lake Golovka (67°35'50"N, 62°55'25.3"E; 67°36'9.1"N, 62°55'50.6"E).

Ecology.

The species inhabits sandy and stony-sandy substrates with algae and moss at depths of 0.5-2.5 m except Lake Bolshoy Kharbey, where it occurs at a depth of 6.2 m.