Abstract The genus Alisalia Casey is reported from Canada for the first time. Three species were discovered in New Brunswick, one previously described from North Carolina, Alisalia testacea Casey, and two species new to science: Alisalia minuta Klimaszewski & Webster, sp. n.; and Alisalia elongata Klimaszewski & Webster, sp. n. Illustrations of the body and genitalia are presented for the species occurring in Canada and for the types of previously described species from North America. New data on habitat are presented. A key to Nearctic species is provided. The following new synonymies are proposed, names in brackets are valid: Alisalia austiniana Casey (=A. parallela Casey); and A. minutissima Casey (=A. brevipennis Casey). Lectotypes are designated for the following species: Alisalia austiniana Casey, A. brevipennis Casey, A. testacea Casey, and A. bistriata (Bernhauer).