Wyoming mammals

Idaho pocket gopher in Wyoming

Thomomys idahoensis

Native to Wyoming S1 Critically Imperiled in Wyoming

Not listed as nonindigenous in Wyoming by USGS NAS; native to its Wyoming range.

IUCN Red List status

  1. LC
  2. NT
  3. VU
  4. EN
  5. CR
  6. EW
  7. EX

LC – Least Concern

Widespread and abundant; not at risk.

Idaho pocket gopher in Wyoming, by the numbers

Occasional in Wyoming 63rd most recorded of 126 mammals logged in Wyoming

51 occurrence records

Records from 2000–2026.

When to look for the Idaho pocket gopher in Wyoming

Most sightings fall in July to August.

51 Wyoming occurrence records (iNaturalist and GBIF) by month of year, 2000–2026. Shows when the species is recorded, not a guarantee of presence.

Monthly Wyoming records (table)
MonthRecords
January0
February0
March0
April0
May9
June0
July18
August23
September0
October1
November0
December0

Monthly idaho pocket gopher occurrence records (iNaturalist and GBIF) in Wyoming, 2000–2026.

Seasonality

Year-round in Wyoming, with recorded sightings peaking in July–August.

Occurrence map

Where Idaho pocket gopher has been recorded in Wyoming

51 records mapped · zoom and drag to explore

51 Wyoming records mapped

Where it's recorded in Wyoming

CountyRecords
Uinta County 26
Lincoln County 24
Sublette County 1

The complete county distribution, spread across 3 Wyoming counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

The Idaho pocket gopher spends nearly its whole life underground, and Wyoming holds only a sliver of its world. The species is centered in southern Idaho and northern Utah, and Wyoming marks the northeastern edge of its range. That edge shows plainly in the data: 50 of the state’s 51 records come from Uinta and Lincoln counties, the two southwestern counties pressed against the Idaho and Utah lines. A single Sublette County record is the lone outlier.

NatureServe ranks the pocket gopher critically imperiled in Wyoming, but that rank has to be read with the range-edge context. A species can be peripheral and genuinely thin on the ground at the same time, and with records from only three counties, the survey effort needed to separate the two hasn’t happened yet. Pocket gophers are also easy to overlook: fresh dirt mounds are usually the only sign, and telling this species’ sign apart from the northern pocket gopher’s takes a practiced eye.

Reports run from May through August, with July and August the heaviest, matching the months when digging sign is freshest and field crews are working the sagebrush basins of the southwest corner.

Occurrence data from GBIF.

More mammals in Wyoming in the atlas

Data & sources

The data and visualizations on this page draw on these open sources:

  • GBIFCC-BY 4.0occurrence records behind the range map, elevation, and record counts
  • iNaturalistCC0 / CC-BY / CC-BY-SAobservations, photos, and audio recordings
  • NatureServe ExplorerCC-BYthe state conservation rank
  • IUCN Red Listattributed factthe global conservation status
  • USGS NASpublic domainnative / introduced status
  • Natural Earthpublic domainthe relief basemap
  • USFSpublic domainnational-forest boundaries