Indiana mammals

Southeastern Myotis in Indiana

Myotis austroriparius

Native to Indiana SH Possibly Extirpated 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

LC – Least Concern

Widespread and abundant; not at risk.

Southeastern Myotis in Indiana, by the numbers

Possibly Extirpated in Indiana 34th most recorded of 74 mammals logged in Indiana

30 occurrence records

30 total records count every Indiana occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 29; the monthly chart covers the 29 records with a full observation date.

When the southeastern myotis was recorded in Indiana

Most historical records fall in February to March.

29 Indiana occurrence records (iNaturalist and GBIF) by month of year. 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
February6
March7
April2
May0
June0
July0
August7
September0
October4
November2
December1

Monthly southeastern myotis occurrence records (iNaturalist and GBIF) in Indiana.

Seasonality

Historical records in Indiana peak in February–March, with a smaller rise in August.

Occurrence map

Where Southeastern Myotis has been recorded in Indiana

29 records mapped · zoom and drag to explore

29 Indiana records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Donaldson Cave Nature Preserve 2
Donaldson Woods Nature Preserve 2
Donaldson Cave Addition Nature Preserve 2

Protected places with the most southeastern myotis sightings, from the USGS Protected Areas Database plus named mountain ranges, good spots to look, not a full breakdown, so they don't sum to the total.

Where it's recorded in Indiana

CountyRecords
Lawrence County 26
Parke County 2
Greene County 1
Other localities 1

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

Indiana’s 30 southeastern myotis records belong mostly to one stretch of cave country: Lawrence County, in the state’s karst-rich south, holds 26 of them, and the nature preserves around Donaldson Cave anchor the rest. This is a small bat of bottomland forest and still water, living at the northern edge of its range, and in Indiana its record is largely historical.

A cave bat at the range’s edge

Southeastern myotis roost in caves, hollow trees, and sometimes culverts or bridges, always near the slow water they skim for insects after dark. Indiana’s southern karst belt gave them winter shelter, and the February and March records come from exactly that setting: biologists counting hibernating bats underground. The summer records bunch in August, when nursery colonies break up and young bats take wing over the river bottoms.

A state rank that stings

NatureServe ranks the species SH in Indiana, possibly extirpated, meaning it’s known from historical records but hasn’t been confirmed in the state lately. That isn’t the same as gone. A six-gram bat that hunts after dark over quiet water is easy to miss without a targeted survey, and Indiana’s southern caves and bottomlands still look the part. What the rank does say is that no recent record has proven the bat still breeds here.

What would change the picture

A fresh, documented record from the Lawrence County cave country or the lower White River bottoms would reset the state’s understanding overnight. Globally the species is considered secure, so the Indiana question isn’t the survival of the species. It’s whether the state’s slice of the range is still occupied.

Occurrence data from 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
  • USGS Protected Areas Databasepublic domainthe named parks, forests, and refuges behind "notable places to look"