Six species of the genus Mocyta Mulsant & Rey are reported from Canada: Mocyta
amblystegii (Brundin), Mocyta
breviuscula (Mäklin), Mocyta
discreta (Casey), Mocyta
fungi (Gravenhorst), Mocyta
luteola (Erichson), and Mocyta
sphagnorum Klimaszewski & Webster, sp. n. New provincial and state records include: Mocyta
breviuscula – Saskatchewan and Oregon; Mocyta
discreta – Quebec, Ontario and Saskatchewan; Mocyta
luteola – New Brunswick, Quebec, Ontario, Massachusetts and Minnesota; and Mocyta
fungi – Saskatchewan. Mocyta
sphagnorum is described from eastern Canada from specimens captured in Newfoundland, New Brunswick, Quebec and Ontario. Mocyta
negligens Mulsant and Rey, a native European species suspected of occurring in Canada, is excluded from the Nearctic fauna based on comparison of European types with similarly coloured Canadian specimens, which are now identified as Mocyta
luteola. The European species, Mocyta
gilvicollis (Scheerpeltz), is synonymized with another European nominal species, Mocyta
negligens, based on examination of type material of the two species. Lectotypes are designated for Eurypronota
discreta Casey, Atheta
gilvicollis Scheerpeltz, Homalota
luteola Erichson, Colpodota
negligens Mulsant and Rey, Acrotona
prudens Casey and Dolosota
redundans Casey. The latter species is here synonymized with Mocyta
luteola. A review of the six Nearctic species is provided, including keys to species and closely related genera, colour habitus images, images of genitalia, biological information and maps of their distributions in Canada.