Gyrinus bifarius Fall, 1922

Prince Edward Island: locality data lost, 1974-1983, (1, UPEI). Prince Co.: Enmore, 21.V.1981, V. Friesen, (1, UPEI). Queens Co.: Mount Herbert, 31.V.1923, J. R. Mutch, (4, UPEI) ; Offi cer’s Pond, 19.IX.1972, R. Edwards, (1, UPEI) ; Vernon River, MacMillan’s Pond, 3.VI.1970, R. Wenn, (1, UPEI) .

Newly recorded on Prince Edward Island, this species is found in both lentic (25.7%) and lotic (74.3%) environments (Oygur and Wolfe 1991).