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Copyright American Museum of Natural History 2002 ISSN 0003-0082 PUBLISHED BY THE AMERICAN MUSEUM OF NATURAL HISTORY
 

Summary: Copyright American Museum of Natural History 2002 ISSN 0003-0082
PUBLISHED BY THE AMERICAN MUSEUM OF NATURAL HISTORY
CENTRAL PARK WEST AT 79TH STREET, NEW YORK, NY 10024
Number 3382, 26 pp., 5 figures, 2 tables August 16, 2002
A New Species of Spiny Pocket Mouse
(Heteromyidae: Heteromys) Endemic to
Western Ecuador
ROBERT P. ANDERSON1,2 AND PABLO JARRIŽN-V.3,4
ABSTRACT
Whereas previous treatments have considered Heteromys australis the only spiny pocket
mouse present in Ecuador, morphological and morphometric analyses of specimens from Ec-
uador and southwestern Colombia reveal the presence of two species of the genus. Heteromys
australis is distributed in evergreen forests from eastern PanamaŽ and western Venezuela
through Colombia to extreme northwestern Ecuador, where it inhabits wet, unseasonal areas
of the ChocoŽ and adjacent western slopes of the Andes. We here describe a new species,
Heteromys teleus, found only in evergreen forests of central-western Ecuador, in areas less
mesic and more seasonal than those characteristic of H. australis. Both species possess dark
gray dorsal pelage, but H. teleus differs by larger (nonoverlapping) measurements of the hind
foot and distinctive cranial proportions. Most notably, the rostrum of the new species is strik-
ingly wide and massive, and the interparietal is narrow and rounded (in contrast to the wide,

  

Source: Anderson, Robert P. - Department of Biology, City College, City University of New York

 

Collections: Environmental Sciences and Ecology