Pará spiny tree-rat

The Pará spiny tree rat (Mesomys stimulax) or Surinam spiny tree rat, is a spiny rat species found in Brazil. Previously, Mesomys Stimulax's karyotype was 2n=60, Fundamental number (abbreviated FN), FN=116. However more recently the new karyotype has been found to be 2n=60, FN=110. This points to the idea that this species is most likely a species complex.

Pará spiny tree rat
Conservation status
Least Concern  (IUCN 3.1)[1]
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Rodentia
Family:	Echimyidae
Subfamily:	Echimyinae
Tribe:	Echimyini
Genus:	Mesomys
Species:	M. stimulax
Binomial name
Mesomys stimulax Thomas, 1911