The smooth-toothed pocket gophers
, genus Thomomys
, are so called because they among the only pocket gophers
without grooves on their incisors
. They are also called the Western pocket gophers because they are distributed in western North America
. They are considered distinct enough from other pocket gophers to be recognized as a separate subfamily or tribe.
is highly fossorial. They rely on their incisors for digging more than most other gophers. They feed on plants, largely from beneath the surface, but they do come above ground at night. Roots
, and bulbs are eaten. When not directly in an agricultural field they are a benefit to humans by enriching soil and preventing runoff.
Over a hundred subspecies have been described, but not all are currently recognized by modern authorities. Like many fossorial
shows a great deal of allopatric
- Subgenus Megascapheus
- Subgenus Thomomys
- Nowak, R. M. 1999. Walker's Mammals of the World, Vol. 2. Johns Hopkins University Press, London.