Geographic Locations and Habitats: AK: Seward Peninsula, near to Cape Espenberg, 66°28′22″N, 163°56′56″W, greyish tephra from Aniakchak eruption (Blackford et al. 2014); AB: Roy Berg Kinsella Research Ranch (Newton & Proctor 2013); ABMI Sites; Moose Pasture Research Site (Walter et al. 2014); ABMI Sites (Meehan et al. 2019); ON: Lake Superior, Granite Is., Black Bay, ring-billed gull nests (Freitag & Ryder 1973); QC: boreal claybelt region of Western Québec (Doblas-Miranda & Work 2015); NB: peatlands (Behan-Pelletier & Bissett 1994); NS: Cape Breton Highlands NP; southwest Nova Scotia uplands (Behan-Pelletier 2010; Behan-Pelletier et al. 1987); PE: (Behan-Pelletier 2010, Behan-Pelletier et al. 1987).
Family Trhypochthoniidae
Genus Mainothrus Choi, 1996