| Guyenne spiny-rat | |
|---|---|
|   | |
|  Scientific classification   | |
| Kingdom: | Animalia | 
| Phylum: | Chordata | 
| Class: | Mammalia | 
| Order: | Rodentia | 
| Family: | Echimyidae | 
| Subfamily: | Echimyinae | 
| Tribe: | Myocastorini | 
| Genus: | Proechimys | 
| Species: | P. guyannensis  | 
| Binomial name | |
| Proechimys guyannensis (É. Geoffroy, 1803)  | |
| Subspecies | |
P. g. arabupu Moojen, 1948  | |
| Synonyms | |
The Guyenne spiny-rat (Proechimys guyannensis) or Cayenne spiny rat, is a spiny rat species [2] found in Brazil, Colombia, French Guiana, Guyana, Suriname and Venezuela.
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 . [3] [4] [5]
| Species-level cladogram of the genus Proechimys. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| The cladogram has been reconstructed from morphological characters and mitochondrial DNA (cytochrome b) sequences. [3] [4] [6] [5] |