Isthmomys Hooper and Musser, 1964

Guy G. Musser & Michael D. Carleton, 1993, Order Rodentia - Family Muridae, Mammal Species of the World (2 nd Edition), Washington and London: Smithsonian Institution Press, pp. 501-755 : 705-706

Isthmomys Hooper and Musser, 1964 . Occas. Pap. Mus. Zool., Univ. Michigan, 635:12.

TYPE SPECIES: Megadontomys flavidus Bangs, 1902 .

COMMENTS: Peromyscine. Species associated here were originally classified in Megadontomys , used either as a genus or as a subgenus of Peromyscus ( Osgood, 1909) . Isthmomys was later diagnosed as a subgenus of Peromyscus ( Hooper and Musser, 1964b) and maintained at this rank by Hooper (1968b); accorded generic status by Carleton (1980, 1989). Sister-group relationship with Megadontomys proposed by Carleton (1980) but unsupported by chromosomal banding data ( Stangl and Baker, 1984b). Aspects of morphology considered by Carleton (1973, 1980), Hooper and Musser (1964b), and Linzey and Layne (1969, 1974); karyology by Stangl and Baker (1984b).