| The scientist who described and named this species, in 1915, found it living in deep, sandy soil on a gently rolling, rather sandy plain where grasses, mesquite, cactus, and acacias grew. It is known only from a few locations in a very limited area, and is considered vulnerable to extinction. Like other pocket gophers, it spends almost its whole life underground, even plugging the entrances to its burrows. Spotted skunks have been caught in pocket gopher burrows eating animals that had been killed in traps. It seems probable that these small skunks also enter burrows to prey on live animals.
The generic name Geomys comes from classical Greek words meaning "earth" and "mouse," but no one could think a pocket gopher mouselike. This species earned its specific epithet, tropicalis, and its common name, by being the only Geomys species whose range is entirely south of the US border.
Total Length: 270 mm; 1963 stats: Total Length: 235-255 mm; Walker: Head and Body: 130-240 mm; Tail vertebrae: 86 mm; 1963 stats: Tail: 78-93 mm; Walker: Tail: 50-125 mm
Goldman, E.A., 1915. Proceedings of the Biological Society of Washington, 28:134.
Mammal Species of the World (opens in a new window).
Mammalian Species, American Society of Mammalogists' species account (opens in a new window).