Chaetodipus intermedius
Rock Pocket Mouse
(Chaetodipus intermedius) | |
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Range | |
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Taxonomic classification | |
Order: | Rodentia |
Suborder: | Supramyomorpha |
Infraorder: | Castorimorphi |
Family: | Heteromyidae |
Subfamily: | Perognathinae |
Genus: | Chaetodipus |
Binomial details | |
Chaetodipus intermedius (Merriam, 1889) |
Description
From Hoffmeister (1986): "Spines present on rump, but often difficult to detect; hind foot short, usually 22 mm or less; tail with a terminal tuft and bicolored; color of dorsum darkish, varying from grayish buff to dark brownish-black to black."
Ears have a lobed antitragus.
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 |
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not reported | Ceballos (editor, 2014) | 152–180 | 83–103 | 19–24 | 7–12 | 10–19 |
Texas | Schmidly & Bradley (2016) | 180 | 103 | 23 | 12–18 |
Color variation


Skull
Similar species
From Hoffmeister (1986): "[Chaetodipus] intermedius differs from [Chaetodipus] penicillatus, the species with which it is most frequently confused, in the presence of spinelike hairs on the rump; hind foot usually 22 mm or less rather than more; interparietal with straight rather than angled suture along anterior face, and thus not pentagonal or five-sided; extensions of anterior wings of supraoccipital between interparietal, and bullae wedge-shaped rather than truncate; rostrum narrower."
References
Ceballos G, editor. 2014. Mammals of Mexico. Baltimore (MD, USA): Johns Hopkins University Press.
Hoekstra HE, Krenz JG, Nachman MW. 2005. Local adaptation in the rock pocket mouse (Chaetodipus intermedius): natural selection and phylogenetic history of populations. Heredity 94(2):217-228.
Hoekstra HE, Nachman MW. 2005. Adaptive coat color variation in rodents. Mammalian Diversification: From Chromosomes to Phylogeography, 133, 79.
Hoffmeister DF. 1986. Mammals of Arizona. Tucson (AZ, USA): University of Arizona Press.
Merriam CH. 1889. Revision of the North American pocket mice. North American Fauna 1:1-29.
Schmidly DJ, Bradley RD. 2016. The mammals of Texas. Austin (TX, USA): University of Texas Press.