Coprophilus castoris Campbell, 1979 Map 16

Material examined.

Additional New Brunswick records, Albert Co., Caledonia Gorge P.N.A. at Caledonia Creek, 45.7935°N, 64.7760°W, 1.VII.2011, R. P. Webster, shaded, rocky, cold, clear brook, splashing gravel (1, RWC). Restigouche Co., Jacquet River Gorge P.N.A., 47.8257°N, 66.0779°W, 24.V.2010, R. P. Webster, partially shaded cobblestone bar near outflow of brook into Jacquet River, under cobblestones and gravel on sand (1, RWC). York Co., Charters Settlement, 45.8395°N, 66.7391°W, 23.IV.2008, R. P. Webster, mature mixed forest, in flight, collected with aerial net between 15:00 and 18:00 h (1, RWC).

Collection and habitat notes.

Coprophilus castoris was reported from inside beaver ( Castor canadensis Kuhl) lodges and collected during an evening flight (St. Andrews, N.B.) (Campbell 1979). The recent New Brunswick specimens of this rare species were found among cobblestones and gravel on sand on a partially shaded cobblestone bar near the outflow of a brook into a river, and among gravel in a cold-shaded brook, and were collected with an aerial net during a late afternoon (15:00-18:00 h) flight. Adults were collected during April, May, and July.

Distribution in Canada and Alaska.

ON, QC, NB (Campbell and Davies 1991).