Almost half of native North American species are endocoprids of burrowing rodents. In eastern NA forest, about half of native species feed on deer droppings, and those that feed on cattle droppings are introduced from Europe. Endocoprids are copraphages in which both adult and larval forms live in droppings. (Hanski 1987)
Godwin W.B. (2002) Cospeciation between Geomys pocket gophers (Rodentia, Geomyidae) and their Aphodius inquilines (Coleoptera, Scarabaeidae). Ph.D. Dissertation. TAMU, College Station. 384 pp.
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