septentrionalis

	site	site # (info)	collection date	kind	depth	substrate	salin	comments	reference
A	Kola Peninsula (Halbinsel Kola, Alexandrowsk, Kandalakscha, Kantalahti, Alexandrovsk), Russia	1263 map	1924 or earlier	type locality			freshwater		Nasonov NV (1924): ; from Steinbock (citation)- p. 313
B	Murmansk (Murmansk Sea Biological Station), Barents Sea, Russia	303 map	1925 or earlier	default type			freshwater	Murmansk, Biolog Station, im Schlamm in fliessendem Wasser, 11 degrees C, 4 Exx.	Nasonov NV (1925): ; from Luther 1963 (citation)- p. 26