Gyrinus sayi Aubé, 1838

Gyrinus sayi was recorded from New Brunswick and Nova Scotia by Oygur and Wolfe (1991) and from all three Maritime Provinces by Roughley (1991) (Fig. 11). It is one of the most common and widely distributed species in the region (Fig. 5). It has been reported from many aquatic habits; Oygur and Wolfe (1991) reported it from both lentic (65%) and lotic (35%) habitats.