Ctenophthalmus pseudagyrtes is a species of fleas in the family Hystrichopsyllidae. It is widespread in North America, east of the Rocky Mountains, and is found mainly on small mammals.[1] In Missouri, it has been recorded on the Virginia opossum (Didelphis virginiana), northern short-tailed shrew (Blarina brevicauda), eastern mole (Scalopus aquaticus), raccoon (Procyon lotor), eastern chipmunk (Tamias striatus), Florida woodrat (Neotoma floridana), prairie vole (Microtus ochrogaster), woodland vole (Microtus pinetorum), white-footed mouse (Peromyscus leucopus), including nests, marsh rice rat (Oryzomys palustris), hispid cotton rat (Sigmodon hispidus), house mouse (Mus musculus), and brown rat (Rattus norvegicus).[2] Hosts recorded in Tennessee include the Virginia opossum, northern short-tailed shrew, eastern mole, eastern chipmunk, southern red-backed vole (Myodes gapperi), rock vole (Microtus chrotorrhinus), woodland vole, white-footed mouse, golden mouse (Ochrotomys nuttalli), hispid cotton rat, marsh rice rat, and house mouse.[3]