nominal species Pisidium compressum var. contortum Mackie, 2007

Pisidium compressum var. contortum Mackie, 2007 = Euglesa compressa

‘Sterki’ Mackie, 2007. OH Biol. Surv. Bull. New Series 15(3): 289.
(intro'd as syn of Pisidium compressum Prime, 1852; intro'd as intra-sp. of Pisidium compressum Prime, 1852; error for Pisidium compressum var. conferum Sterki, 1905)