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HOME --> CLASS MAMMALIA
--> ORDER RODENTIA
--> SUBORDER HYSTRICOMORPHA
--> INFRAORDER HYSTRICOGNATHI
--> FAMILY Echimyidae
--> SUBFAMILY Eumysopinae
--> GENUS Mesomys
SPECIES Mesomys stimulax
| Author: | Thomas, 1911. | | Citation: | Ann. Mag. Nat. Hist., ser. 8, 7: 607. | | Common Name: | Pará Spiny Tree Rat | | Type Locality: | Brazil, Pará, Amazon estuary, "Cametá, Lower Tocantins." | | Distribution: | Brazil, east of the Rio Tapajós and south of the Amazon. | | Status: | IUCN – Lower Risk (lc). | | Comments: | Formerly included in hispidus by Cabrera (1961); considered a distinct species by Husson (1978). Material from south of the Amazon and east of the Rio Tapajós in Brazil is karyotypically identical (2n=60, FN=116) with hispidus (Patton et al., 2000) but genetically divergent (da Silva and Patton, 1993; Patton et al., 2000). Voss et al. (2001) examined the holotype and grouped it with "small-toothed" forms from Guiana and SE Amazonia. Small-toothed forms from NE South America, however, have affinities with hispidus, whereas stimulax appears to be restricted to areas east of the Rio Tapajós and south ofthe Amazon (Orlando et al., 2003; Patton et al., 2000). |
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