Wilfredomys Avila-Pires 1960 Wilfredomys Avila-Pires 1960, Bol. Mus. Nac., Nov. Ser., Rio de Janeiro, 220: 3. Type Species: Thomasomys oenax Thomas 1928 Species and subspecies: 1 species: Species Wilfredomys oenax (Thomas 1928) Discussion: Sigmodontinae incertae sedis. Genus diagnosed to encompass another problematic thomasomyine-like species from the Atlantic Forest region; see Osgood (1933 b) and Pine (1980 b) for historical reviews of the generic affiliations of the type species. The categorical recognition of this taxon, conventionally treated as a subgenus of Thomasomys (e.g., Carleton and Musser, 1984; Corbet and Hill, 1991; Pine, 1980 b), will depend on phylogenetic studies involving other SE Brazilian endemics (also see comments under Delomys and Juliomys).

Published as part of Wilson, Don E. & Reeder, DeeAnn, 2005, Order Rodentia - Family Cricetidae, pp. 955-1189 in Mammal Species of the World: a Taxonomic and Geographic Reference (3 rd Edition), Volume 2, Baltimore :The Johns Hopkins University Press on page 1185, DOI: 10.5281/zenodo.7316535