A new species of the rodent genus Oecomys (Cricetidae, Sigmodontinae, Oryzomyini) from eastern Bolivia, with emended definitions of O. concolor (Wagner) and O. mamorae (Thomas)

Title Variants

Alternative: New species of Oecomys

Related Titles

Series: American Museum novitates, no. 3661

By

Carleton, Michael D. (Michael Dean), 1944-

Emmons, Louise
Musser, Guy G.

Type

Book

Material

Published material

Publication info

New York, NY, American Museum of Natural History, c2009

Notes

Caption title.

"August 28, 2009."

Abstract also in Spanish.

[English abstract]. We describe a new species of Oecomys, O. sydandersoni (Cricetidae: Sigmodontinae), from the Parque Nacional Noel Kempff Mercado in eastern Bolivia. One of its diagnostic traits, a derived carotid circulatory plan, provides morphological evidence for its close relationship to O. concolor and O. mamorae among the 15 species of Oecomys currently recognized. Notwithstanding this shared trait, other morphological contrasts and morphometric analyses demonstrate the sharp differentiation of the eastern Bolivian form from both of those species. Oecomys sydandersoni, n. sp., is arboreal and was encountered above ground on limbs and woody vines only in densely wooded hummocks scattered through grassland, in contrast to adjacent closed tropical deciduous forest where three other species of Oecomys (O. bicolor, O. roberti, O. trinitatis) were obtained. The new species represents the fourth sigmodontine rodent to be named from this restricted region within eastern Bolivia since 1999. Its documentation served as a platform to summarize the nomenclatural history, morphological recognition, and geographic distribution of O. concolor (Wagner, 1845) and O. mamorae (Thomas, 1906) based on fresh examination of all type material and museum specimens.

Subjects

Bolivia , Classification , Mammals , Muridae , Oecomys concolor , Oecomys mamorae , Oecomys sydandersoni , Parque Nacional Noel Kempff Mercado , Rodents

Call Number

QL1 .A436 no.3661 2009

Language

English

Identifiers

OCLC: 435534502