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Liomys irroratus

Mexican Spiny Pocket Mouse

Order: Rodentia
Family: Heteromyidae

Image of Liomys irroratus
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Conservation Status: Least Concern.


The Mexican Spiny Pocket Mouse occurs in central and northeastern Mexico and the extreme south of Texas. It inhabits a variety of semi-arid brushy or rocky habitats, and is common where it lives. The "pockets" of the pocket Mouse are fur-lined cheek pouches, where seeds are carried from the foraging area to the burrow. Mexican Spiny Pocket Mice are grayish-brown, with white underparts. On the back, a mixture of stiff spiny hairs and soft ones gives the animal a somewhat coarse appearance. These Mice are nocturnal and are active year-round.

Sexual Dimorphism:
Males are larger than females.

Length:
Average: 238 mm males; 226 mm females
Range: 216-262 mm males; 207-251 mm females

Weight:
Range: 40-60 g males; 35-50 g females

References:

Merriam, C.H., 1902.  Twenty new pocket mice (Heteromys and Liomys) from Mexico, p. 44.  Proceedings of the Biological Society of Washington, 15:41-50.

Links:

Mammal Species of the World

Mammalian Species, American Society of Mammalogists' species account

Distribution of Liomys irroratus