Erethizontinae is a subfamily of the

New World porcupine The New World porcupines, family Erethizontidae, are large arboreal rodents, distinguished by their spiny coverings from which they take their name. They inhabit forests and wooded regions across North America, and into northern South America. A ...

family Erethizontidae, and includes all species of the family with the exception of the

bristle-spined rat The bristle-spined rat (''Chaetomys subspinosus'') is an arboreal rodent from the Atlantic forest in eastern Brazil. Also known as the bristle-spined porcupine or thin-spined porcupine, it is the only member of the genus ''Chaetomys'' and the ...

, ''Chaetomys subspinosus'', which is classified in its own subfamily, Chaetomyinae.

References

Taxa named by Charles Lucien Bonaparte {{Rodent-stub