Oligoryzomys stramineus
species of mammal
Oligoryzomys stramineus, also known as the straw-colored colilargo or straw-colored pygmy rice rat, is a species of rodent in the genus Oligoryzomys of the family Cricetidae. It occurs only in the cerrado and caatinga ecoregions of northeastern Brazil. Its karyotype has 2n = 52 and FNa = 68-70.
Description
Oligoryzomys stramineus is a large species of colilargo with a yellowish-brown head and dorsal surface and whitish underparts, with a sharp line demarcating the boundary between the two. It has long incisive foramina (openings in the hard palate of the skull) and broad zygomatic plates (bony plates in the upper jaw). The head-and-body length averages 94 mm (3.70 in) while the tail averages 118 mm (4.65 in).
Distribution and habitat
This species is native to South America where it occurs in northeastern and central Brazil. Its range extends from the cerrado ecoregion of the states of northern Goiás and northern Minas Gerais southward to the caatinga ecoregion of the states of Paraíba and Pernambuco. In the cerrado, it has mainly been found in gallery forests. It shares part of its range in central Brazil with Oligoryzomys fornesi and is sometimes caught in the same line of traps.
The public source identifies “Oligoryzomys stramineus” as species of mammal. This brief keeps that definition visible, then builds a research path around Oligoryzomys, stramineus and species.
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Datasets, specimens, observations and peer-reviewed methods provide the appropriate test for the technical claims summarized here. The source revision retrieved here is dated May 1, 2026. The linked authority identifier is Q1765642. None of the 0 selected statements returned an explicit reference.
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This entry incorporates text from “Oligoryzomys stramineus” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.