Indiana mammals

Western Little Brown Myotis in Indiana

Myotis lucifugus

Native to Indiana S1 Critically Imperiled in Indiana

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

IUCN Red List status

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

EN – Endangered

Very high risk of extinction in the wild.

Western Little Brown Myotis in Indiana, by the numbers

Occasional in Indiana 48th most recorded of 74 mammals logged in Indiana

5 occurrence records
5 with iNaturalist photos
Jun 28, 2024 Last seen in Indiana

Records from 2000–2026.

When to look for the Western Little Brown Myotis in Indiana

Most sightings fall in August.

5 Indiana occurrence records (iNaturalist and GBIF) by month of year, 2000–2026. Shows when the species is recorded, not a guarantee of presence. Based on a small number of dated records; the seasonal pattern may not be representative.

Monthly Indiana records (table)
MonthRecords
January0
February0
March1
April0
May0
June1
July0
August2
September0
October1
November0
December0

Monthly western little brown myotis occurrence records (iNaturalist and GBIF) in Indiana, 2000–2026.

Seasonality

Sparse observation record in Indiana; presence confirmed but timing of activity not well documented.

Occurrence map

Where Western Little Brown Myotis has been recorded in Indiana

5 records mapped · zoom and drag to explore

5 Indiana records mapped

Where it's recorded in Indiana

CountyRecords
Allen County 1
Tippecanoe County 1
Monroe County 1
Marion County 1
Johnson County 1

The complete county distribution, spread across 5 Indiana counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Indiana has just 5 records of the western little brown myotis from 2000 on, all research-grade iNaturalist observations and one of them also held in GBIF. That’s a thin record set for a bat that used to be one of the most frequently recorded in the eastern United States.

Scattered records, away from the cave country

The recent records come one apiece from Allen, Tippecanoe, Marion, Johnson, and Monroe counties, mostly in the middle of the state rather than the far south. It’s a different part of the state from where the real crisis has played out. Indiana’s hibernating colonies cluster in the caves of the unglaciated south, and white-nose syndrome has hit that cave country hard since the fungus arrived.

A small August cluster

August holds two of the recent records, with single ones in March, June, and October. That’s far too few to call a pattern, but the August pair lines up with the month when little brown myotis across their range gather near cave entrances ahead of winter.

Status in Indiana

NatureServe ranks the western little brown myotis S1, critically imperiled, in Indiana, a harder hit than its already-Endangered global status. It’s still native to the state, but its numbers here have fallen further and faster than in most places this bat is tracked.

Occurrence data from iNaturalist and GBIF.

More mammals in Indiana 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