Dytiscus harrisii Kirby, 1837

Prince Co.: Conway Narrows, 1.VIII.1970, U. Grigg, (1, NSMC) ; Queens Co.: Rice Pt., 12.VII.1983, M.E.M. Smith; Rice Pt., 13.VII.1983, M.E.M. Smith, (1, ACPE) .

Newly recorded on Prince Edward Island, this species is found in shallow, warm permanent ponds and sedge marshes; specimens have also been taken in beaver ponds and at the edges of slow-moving boreal streams (Larson et al. 2000).