49. Lumbriculus variegatus (Mueler, 1774)

Lumbricus variegatus Müller, 1774

Lumbriculus kareliensis Popchenko, 1976

Geographic distribution.

Holarctic species. In tundra zone of Russia: Murmansk Region (Stalmakova 1974; Finogenova 1975; Veselov 1977; Timm and Popchenko 1978), Vaygach Island (Leshko et al 2008), the Pechora River delta (Baturina 2018), Lake Ambarty and some other lakes in the Korotaikha River basin (Popchenko 1978), lakes in the Kara River, Malaya and Bolshaya Usa Rivers basins (Baturina et al. 2014b), the Vashutkiny lakes system (Finogenova 1966), Lake Bolshoy Ngosovey and lakes in the More-yu River basin (Baturina and Loskutova 2010), the Gydansky and Yamal Peninsula (Stepanov 2016, 2017, 2018), northern part of Western Siberia (Zaloznyj 1984), the Yenisey River delta (Chekanovskaya 1956), and the Anadyr River basin (Morev 1983b).

Location.

Lake Bolshoy Kharbey (67°34'N, 62°57'E; 67°34'34.3"N, 62°52'17.4"E; 67°34'3.5"N, 62°52'17.9"E; 67°32'44.2"N, 62°55'22.3"E; 67°32'50"N, 62°52'26.3"E; 67°31'38"N, 62°53'2.8"E); Lake D1 (67°36'2.2"N, 62°54'8.2"E; 67°35'52.8"N, 62°53'52.6"E); Lake L (67°35'41.5"N, 62°49'34.7"E); Lake K2 (67°32'40.9"N, 62°51'39.1"E); Lake Golovka (67°36'21.2"N, 62°56'6.6"E, 67°36'9.1"N, 62°55'50.6"E); temporary pond (67°58"N, 62°34'60"E).

Ecology.

The species was observed in most lakes of the area; L. variegatus often numerically dominated, inhabiting sands or silts between stones, submerged macrophytes, and stones with moss or algal covering (at depth up to 1 m).