Nais pseudobtusa Piguet, 1906

Baturina, Maria A., Kaygorodova, Irina A. & Loskutova, Olga A., 2020, New data on species diversity of Annelida (Oligochaeta, Hirudinea) in the Kharbey lakes system, Bolshezemelskaya tundra (Russia), ZooKeys 910, pp. 43-78 : 43

14. Nais pseudobtusa Piguet, 1906

Geographic distribution.

Holarctic species. In the Russian tundra: Murmansk Region ( 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 More-yu River basin, Lake Bolshoy Ngosovey ( Baturina and Loskutova 2010), lakes in the Malaya and Bolshaya Usa Rivers basins, as well as lakes in the Kara River basin ( Baturina et al. 2014b).

Location.

Lake Bolshoy Kharbey (67°34'42.3"N, 62°52'57.1"E; 67°34'34.3"N, 62°52'17.4"E; 67°34'3.5"N, 62°52'17.9"E; 67°33'48.2"N, 62°55'2.6"E; 67°32'50"N, 62°52'26.3"E; 67°32'49.9"N, 62°53'40.1"E); Lake K2 (67°32'55.7"N, 62°51'39.7"E; 67°32'44.5"N, 62°51'38.2"E); Lake D1 (67°35'52.8"N, 62°53'52.6"E), Lake K1 (67°36'27.6"N, 62°51'58.4"E); Lake Golovka (67°36'06"N, 62°55'28.6"E), temporary pond near Kharbey (67°58'00"N, 62°34'60"E).

Ecology.

Specimens were sampled from different hard substrates or on the vegetated areas (depth 0.3-2.0 m). In water bodies adjacent to Kharbey, N. pseudobtusa prefers clayey or silted sand (depth of 7.5 m); single specimens were found in small isolated lakes with floating moss mats and thick sedge overgrowths.