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).