38. Limnodrilus hoffmeisteri Claparede, 1862

Limnodrilus parvus Southern, 1909

Geographic distribution.

Cosmopolitan species. In the Russian tundra: Murmansk Region (Stalmakova 1974; Veselov 1977; Timm and Popchenko 1978; Jakovlev 1982); the Pechora River delta (Baturina 2018), Vaygach Island (Leshko et al. 2008), Lake Ambarty and some other lakes in the Korotaikha River basin (Popchenko 1978), lakes in the More-yu River basin (Baturina and Loskutova 2010), the Norilsk`s group of lakes (Vershinin 1960), the Ob River delta (Timm and Abarenkov 2018), northern part of Western Siberia (Zaloznyj 1984), the Gydansky and Yamal Peninsulas (Stepanov 2016, 2017, 2018), the Lena River delta (Gukov 1990).

Location.

Lake Bolshoy Kharbey (67°34'55.7"N, 62°57'44"E; 67°33'48.2"N, 62°55'2.6"E; 67°32'44.2"N, 62°55'22.3"E; 67°32'48.3"N, 62°53'49.7"E); Lake L (67°35'41.5"N, 62°49'34.7"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); Lake Golovka (67°36'9.4"N, 62°56'39.9"E; 67°36'9.1"N, 62°55'50.6"E).

Ecology.

The species is recorded in most lakes of the Kharbey system. Limnodrilus hoffmeisteri prefers silts, but it was also found on sandy-clay sediment and stones with algal cover (from the water edge to 5.2 m in depth).