Redescription of Demodex nanus (Acari: Demodicidae) from Rattus norvegicus and R. rattus (Rodentia).

The female of Demodex nanus from Rattus norvegicus and R. rattus , 2 closely related hosts, is redescribed and all other life stages are newly described. This mite infests the sebaceous glands of the body hair follicles of the host. Available information indicates that D. nanus is not conspecific with D. soricinus from Sorex araneus castaneus as suggested by Stanley Hirst in 1919.