The Napo spiny rat (''Proechimys quadruplicatus'') is a spiny rat species found in

Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area ...

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 ...

Ecuador Ecuador ( ; ; Quechua: ''Ikwayur''; Shuar: ''Ecuador'' or ''Ekuatur''), officially the Republic of Ecuador ( es, República del Ecuador, which literally translates as "Republic of the Equator"; Quechua: ''Ikwadur Ripuwlika''; Shuar: ''Eku ...

Peru , image_flag = Flag of Peru.svg , image_coat = Escudo nacional del Perú.svg , other_symbol = Great Seal of the State , other_symbol_type = Seal (emblem), National seal , national_motto = "Fi ...

and

Venezuela Venezuela (; ), officially the Bolivarian Republic of Venezuela ( es, link=no, República Bolivariana de Venezuela), is a country on the northern coast of South America, consisting of a continental landmass and many islands and islets in th ...

Phylogeny

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

References

Proechimys Mammals of Colombia Fauna of the Amazon Mammals described in 1948 Taxa named by Philip Hershkovitz {{Echimyidae-stub