The Guyenne spiny-rat (''Proechimys guyannensis'') or Cayenne spiny rat, is a spiny rat species found in Brazil,

Colombia Colombia (, ; ), officially the Republic of Colombia, is a country in South America with insular regions in North America—near Nicaragua's Caribbean coast—as well as in the Pacific Ocean. The Colombian mainland is bordered by the Car ...

, French Guiana,

Guyana Guyana ( or ), officially the Cooperative Republic of Guyana, is a country on the northern mainland of South America. Guyana is an indigenous word which means "Land of Many Waters". The capital city is Georgetown. Guyana is bordered by the ...

Suriname Suriname (; srn, Sranankondre or ), officially the Republic of Suriname ( nl, Republiek Suriname , srn, Ripolik fu Sranan), is a country on the northeastern Atlantic coast of South America. It is bordered by the Atlantic Ocean to the north ...

and Venezuela.

Phylogeny

Morphological characters and mitochondrial cytochrome b DNA sequences showed that ''P. guyannensis'' belongs to the so-called ''guyannensis'' group of ''Proechimys'' species, and shares closer phylogenetic affinities with the other member of this clade: '' P. roberti''.

References

Proechimys Mammals of Colombia Mammals described in 1803 Taxa named by Étienne Geoffroy Saint-Hilaire {{Echimyidae-stub