Colopterus truncatus (Randall, 1838)
Carleton Co.: Hovey Hill, 46.1115°N, 67.7710°W, 7.IX.2004, R.P. Webster, hardwood forest, under poplar bark, (3, NBM, RWC) ; near the Hovey Hill, 46.1155°N, 67.7631°W, 10.V.2005, R.P. Webster, clearcut, mixed forest, under bark of Populus sp., (15, NBM, RWC) ; Belleville, Meduxnekeeg Valley Nature Preserve, 46.1890°N, 67.6766°W, 8.VI.2005, M.-A. Giguére & R.Webster, flood plain forest, on flowers of Prunus virginiana, (1, RWC) ; Sunbury Co.: 7.5 km W of Tracy off Rt. 645, 45.6861°N, 66.7719°W, 9.V.2007, Mixed forest, in litter at base of cut white birch oozing sap, (1, RWC) ; Lakeville Corner, 45.9013°N, 66.2565°W, 27.VIII.2006, R. P. Webster, silver maple forest, on corncobs, (1, RWC) ; York Co.: Charters Settlement, 45.8395°N, 66.7391°W, 8.IX.2007, Mixed forest, in pile of corncobs and cornhusks, (1, RWC) .
Colopterus truncatus has been recorded in Canada from the Yukon east to Nova Scotia (McNamara 1991; Majka and Cline 2006), and it is broadly distributed in the United States south through Central America to Brazil (Parsons 1943). Adults are found under bark and feed on sap (Parsons, 1943) or on molds in subcortical environments (A. Cline, pers. obs.). Price and Young (2006) found the species on large-toothed poplar ( Populus grandidentata Michx., Salicaceae), and maple ( Acer sp., Aceraceae).