Descriptions, a key to species, and distribution maps are presented for the three species of Dissochaetus Reitter 1884 known from America north of Mexico. A lectotype is designated for Dissochaetus oblitus LeConte, which occurs in the eastern deciduous forest biome of the eastern United States and southern Ontario. Dissochaetus arizonensis Hatch occurs in mountain forests from Arizona, New Mexico, and west Texas north to Wyoming. Dissochaetus mexicanus Jeannel is reported for the first time in the United States from montane forests in Big Bend, Texas. All are carrion scavengers. Each species represents a separate northwards colonization from Neotropical ancestors.
Canadian Entomologist
Department of Biology

Peck, S. (1999). A review of the Dissochaetus (Coleoptera: Leiodidae: Cholevinae) of the United States and Canada. Canadian Entomologist, 131(2), 179–186. doi:10.4039/Ent131179-2