A review of the flea genus Eumolpianus Smit, 1983 with a discussion of its geographic distribution and host associations (Siphonaptera: Ceratophyllidae: Ceratophyllinae).

The genus Eumolpianus Smit, 1983, a group of fleas infesting chipmunks mostly in western North America, is reviewed. Its host preferences and distribution are discussed and the relationships of the 7 currently recognized species are examined. It is concluded that E. eumolpi americanus (Hubbard, 1950) is a junior synonym of the nominate species. Although not formally synonymized, it is postulated, based on morphology and geographic distribution, that E. eutamiadis (Augustson, 1942) and E. fornacis (Jordan, 1937) are conspecific, as are E. orarius (Johnson, 1961) and E. wallowensis (Hubbard, 1947) with E. cyrturus (Jordan, 1929). The status of E. polumus (Traub & Johnson, 1952) remains uncertain, but it is evidently a member of the E. cyrturus-group.