Gyrinus pugionis Fall, 1922

Gyrinus pugionis was recorded from New Brunswick and Nova Scotia by Roughley (1991) (Fig. 11). Robert (1955) and Morrissette (1979) both reported it from peaty or semi-peaty lakes, Robert (1955) mentioned that it invades narrow outflow streams from such lakes. Oygur and Wolfe (1991) reported it primarily (88%) from lentic habitats.