quadrioculatum

	site	site # (info)	collection date	kind	depth	substrate	salin	comments	reference
A	Volga River, Russia	2773 map	1900 or earlier						Zykoff W (1900): abstract
B	Plöner Lake (Grosser Ploner See, Ploner, Plönersee, Plöner See, Great Lake Plön), Germany	2655 map	1893 or earlier	default type					Zacharias O (1893): Bush card