Oryzomys texensis
| Texas Marsh Rice Rat
(Oryzomys texensis) | |
|---|---|
| Range | |
 | |
| Taxonomic classification | |
| Order: | Rodentia |
| Suborder: | Supramyomorpha |
| Infraorder: | Myomorphi |
| Superfamily: | Muroidea |
| Family: | Cricetidae |
| Subfamily: | Sigmodontinae |
| Tribe: | Oryzomyini |
| Genus: | Oryzomys |
| Binomial details | |
| Oryzomys texensis J. A. Allen, 1894 | |
| Other resources | |
| Full taxonomic details at MDD | |
From Rose (2024): "Molecular genetic analysis (Hanson et al. 2010), supported by earlier assessments by Schmidt and Engstrom (1994) and Goldman (1918), plus its parapatric distribution with Oryzomys palustris, led Hanson et al. to conclude that “texensis” was sufficiently distinct from the other subspecies of O. palustris to be considered as a separate species."
Description
From Schmidly & Bradley (2016): "Rat-like, with long, nearly naked, scaly tail; ears short and hairy; upperparts grizzled grayish brown, heavily lined with black, especially in winter pelage; underparts whitish."
External measurements
Length measurements are in millimeters (mm) and weight measurements are in grams (g), unless stated otherwise. If available, the sample size (n=) is provided. If a range is not provided and n= is not given, then the listed measurement represents an average.
| Part of range | Reference | Total length | Tail length | Hindfoot length | Ear length | Mass |
|---|---|---|---|---|---|---|
| Texas | Schmidly & Bradley (2016) | 245 | 116 | 29 | 51 (40–68) |
Skull
References
Goldman EA. 1918. The rice rats of North America. North American Fauna 43:1–101. https://doi.org/10.3996/nafa.43.0001
Hanson JD, Indorf JL, Swier VJ, Bradley RD. 2010. Molecular divergence within the Oryzomys palustris complex: evidence for multiple species. Journal of Mammalogy 91(2):336–347. https://doi. org/10.1644/08-MAMM-A-342.1
Rose RK. 2024. Oryzomys texensis (Rodentia: Cricetidae). Mammalian Species, 56(1036):1-12.
Schmidly DJ, Bradley RD. 2016. The mammals of Texas. Austin (TX, USA): University of Texas Press.
Schmidt CA, Engstrom MD. 1994. Genic variation and systematics of rice rats (Oryzomys palustris species group) in southern Texas and northeastern Tamaulipas, Mexico. Journal of Mammalogy 75(4):914–928. https://doi.org/10.2307/1382473