Article · Wikipedia archive · Last revised Aug 5, 2026

Gray-footed spiny rat

The gray-footed spiny rat is a subspecies of the Guaira Spiny Rat, a rodent in the family Echimyidae. It is found in Colombia and Venezuela.

Last revised
Aug 5, 2026
Read time
≈ 2 min
Length
518 w
Citations
11
Source
Gray-footed spiny rat
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Infraclass: Placentalia
Order: Rodentia
Family: Echimyidae
Tribe: Myocastorini
Genus: Proechimys
Species:
Subspecies:
P. g. poliopus
Trinomial name
Proechimys guairae poliopus
Osgood, 1914

The gray-footed spiny rat (Proechimys guairae poliopus) is a subspecies of the Guaira Spiny Rat,2 a rodent in the family Echimyidae.3 It is found in Colombia and Venezuela.

Phylogeny

Morphological characters and mitochondrial cytochrome b DNA sequences showed that P. poliopus belongs to the so-called trinitatus group of Proechimys species, and shares closer phylogenetic affinities with the other members of this clade: P. trinitatus, P. mincae, P. guairae, P. magdalenae, P. chrysaeolus, P. urichi, and P. hoplomyoides.4567

Species-level cladogram of the genus Proechimys.
The cladogram has been reconstructed from morphological characters and mitochondrial DNA (cytochrome b) sequences.4567
References

References

  1. Aguilera, M. & Ochoa, J. (2008). "Proechimys poliopus". IUCN Red List of Threatened Species. 2008. Archived from the original on 17 July 2015. Retrieved 6 January 2009.{{cite iucn}}: old-form url (help)
  2. Roach, N.; Naylor, L. (2016). "Guaira Spiny Rat". IUCN Red List of Threatened Species. 2016 e.T18284A22209221. doi:10.2305/IUCN.UK.2016-2.RLTS.T18284A22209221.en. Retrieved 2026-06-22.
  3. Woods, C.A.; Kilpatrick, C.W. (2005). "Species Proechimys poliopus". In Wilson, D.E.; Reeder, D.M (eds.). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. pp. 1538–1600. ISBN 978-0-8018-8221-0. OCLC 62265494.
  4. Patton, James L. (1987). "Species groups of spiny rats, genus Proechimys (Rodentia: Echimyidae)". Fieldiana: Zoology, Studies in Neotropical Mammalogy: Essays in Honor of Philip Hershkovitz. 39: 305–345. ISSN 0015-0754.
  5. Da Silva, Maria Nazareth F. (1998). "Four New species of spiny rats of the genus Proechimys (Rodentia: Echimyidae) from the Western Amazon of Brazil". Proceedings of the Biological Society of Washington. 111: 436–471. ISSN 0006-324X.
  6. Patton, James L.; Da Silva, Maria Nazareth F.; Malcolm, Jay R. (2000-01-25). "Mammals of the Rio Juruá and the evolutionary and ecological diversification of Amazonia". Bulletin of the American Museum of Natural History. 244: 1–306. doi:10.1206/0003-0090(2000)244<0001:MOTRJA>2.0.CO;2. ISSN 0003-0090.
  7. Patton, James L.; Leite, Rafael N. (2015-03-09). "Genus Proechimys J. A. Allen, 1899". In Patton, James L.; Pardiñas, Ulyses F. J.; D'Elía, Guillermo (eds.). Mammals of South America, Volume 2: Rodents. University of Chicago Press. pp. 950–989. ISBN 978-0-226-16960-6.