title: Systematic studies of the genus Aegialomys Weksler, Percequillo and Voss, 2006 (Rodentia: Cricetidae: Sigmodontinae): Annotated catalogue of the types of the species-group taxa.
abstract: The genus Aegialomys was described to encompass the former Oryzomys xanthaeolus group, and includes nowadays two species: A. xanthaeolus and A. galapagoensis. Although not very confusing, the taxonomic history of the genus is long, comprising the description of five nominal taxa along the last 180 years: Mus galapagoensis Waterhouse, 1839; Oryzomys bauri Allen, 1892; Oryzomys xanthaeolus Thomas, 1894; Oryzomys  baroni Allen, 1897; and Oryzomys  xanthaeolus ica Osgood, 1944. Here we gathered and documented all available information about the type material of Aegialomys on which the species names were based, re-described their morphometric and morphological characters, commented their synonyms and taxonomic history, and compiled information about type localities. Additionally, we established a neotype for O. bauri in order to define the nominal taxon objectively.
authors.affiliation: Departamento de Ciências Biológicas, Escola Superior de Agricultura 'Luiz de Queiroz', Universidade de São Paulo, 13418-900 Piracicaba, São Paulo, Brazil; Email: unknown.
authors.forename: Joyce Rodrigues Do
authors.initials: JR
authors.lastname: Prado
authors.affiliation: Departamento de Ciências Biológicas, Escola Superior de Agricultura 'Luiz de Queiroz', Universidade de São Paulo, 13418-900 Piracicaba, São Paulo, Brazil; Email: percequillo@usp.br.
authors.forename: Alexandre Reis
authors.initials: AR
authors.lastname: Percequillo
mesh_terms: D063147:Animal Distribution; D000818:Animals; D005260:Female; D008297:Male; D016205:Sigmodontinae / Q000033:anatomy & histology* / Q000145:classification*; D013020:South America; D013045:Species Specificity