Bibimys labiosus Winge, 1887 (Mammalia: Rodentia: Sigmodontinae): new records in Paraná state, southern Brazil, and update of the known geographic distribution

Abstract

Bibimys is a genus still poorly known in its basic aspects, such as systematics, natural history and geographic distribution. In Brazil, only Bibimys labiosus is recorded, with occasional records spread in time and space. This paper presents four new localities of the species in Araucaria Forest, Paraná state, extending its distribution 150 km southwards. Additionally, a map of the known distribution of the species in Brazil and in Araucaria Forest is provided. The records point toward the lack of knowledge about basic aspects of the small non-flying mammal fauna in the plateau regions of Brazil.

Small mammal diversity in Semi-deciduous Seasonal Forest of the southernmost Brazilian Pampa: the importance of owl pellets for rapid inventories in human-changing ecosystems

“…The current alpha taxonomy of the rare akodontine Bibimys, which includes three species, is mostly based on subtle cranial and genetic differences (D'Elía et al, 2005;Gonçalves et al, 2005;Pardiñas et al, 2015a). The Brazilian samples are traditionally referred to B. labiosus (see Grazzini et al, 2015;Pardiñas et al, 2015a), but the populations from the grasslands of southern Misiones Province (Argentina), not far from SLS, are referred to B. chacoensis (Pardiñas et al, 2017a). The SLS record enlarges the known distribution of this genus by about 450 km to the south in Brazil, but its specific assignment needs to be strengthened; again, the possibility to extract DNA from owl pellet material seems a plausible way to do that.…”