Cryptarcha concinna Melsheimer, 1853

Carleton Co.: Jackson Falls, Bell Forest, 46.2199°N, 67.7232°W, 12.IV.2007, R.P. Webster, hardwood forest, in leaf litter at base of tree (1, RWC); York Co.: Charters Settlement, 45.8395°N, 66.7391°W, 20.VII.2006, 23.VII.2007, 1.VIII.2007, R.P. Webster, mixed forest, m. v. light, (3, NBM, RWC).

In Canada this species is recorded from British Columbia east to Québec and Nova Scotia ( McNamara 1991; Majka and Cline 2006), and in the United States from Massachusetts south to Florida and west to California and Oregon ( Parsons 1943). In Nova Scotia it is found associated with red oak ( Quercus rubra L., Fagaceae) and red maple ( Acer rubrum L., Aceraceae).