Key to the genera of the Tribe Oryzomyini (Rodentia: Cricetidae: Sigmodontinae)

WEKSLER, M.; PERCEQUILLO, A.R. 2011. Key to the genera of the Tribe Oryzomyini (Rodentia: Cricetidae: Sigmodontinae). Mastozoología Neotropical 18(2):281-292.

Abstract. Due to recent phylogenetic and revisionary taxonomic work, the systematics of the Tribe Oryzomyini, the largest group of sigmodontine rodents, underwent profound changes. We present here an artificial key for the genera of this group of rodents, enabling researchers to identify oryzomyines using external, cranial and dental characteristics. We also present the most up-to-date diversity assessment of the tribe, in which we recognize 33 extant and extinct genera (plus three undescribed genus-group taxa) and 130 valid species.