Thrichomys

Thrichomys is a genus of South American rodents in the family Echimyidae. It contains at least five species, found in Bolivia, Brazil and Paraguay. They are as follows:
 * Thrichomys apereoides - Common punaré
 * Thrichomys fosteri - Foster's punaré
 * Thrichomys inermis - Highlands punaré
 * Thrichomys laurentius - Sao Lourenço punaré
 * Thrichomys pachyurus - Paraguayan punaré

Phylogeny
The closest relatives of the genus Thrichomys are two clades consisting of pairs of Myocastorini genera: Callistomys (the painted tree-rat) and Myocastor (the coypu or nutria) in one clade, and Hoplomys (the armored rat) and Proechimys in the other.