Guyenne spiny rat
The Guyenne spiny-rat, "Proechimys guyannensis", or Cayenne spiny rat, is a spiny rat species from South America. It is found in Brazil, Colombia, French Guiana, Guyana, Surinam 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".