Montana Field Guide

Help

Montana Field Guides

Home - Other Field Guides
- Kingdom - Animals - Animalia
  - Phylum - Spiders, Insects, and Crustaceans - Arthropoda
    - Class - Insects - Insecta
      - Order - Mayflies - Ephemeroptera
        
        Family - Baetid Mayflies - Baetidae
        
        Species - A Mayfly - Baetis bicaudatus

A Mayfly - Baetis bicaudatus

Image Copyright and Usage Information

Native Species

Global Rank: G5
State Rank: S5

Agency Status
USFWS:
USFS:
BLM:

External Links

General Description

We do not yet have descriptive information on this species. Please try the buttons above to search for information from other sources.

Diagnostic Characteristics

B. bicaudatus larvae are differentiated from other Baetis by the presence of 2 unbanded caudal filaments and broad thumb-shaped labial palps. Montana's only Baetis with 2 tails.

Species Range

Montana Range Range Descriptions

Native

Observations in Montana Natural Heritage Program Database

Number of Observations: 221

(Click on the following maps and charts to see full sized version) Map Help and Descriptions

Relative Density

Recency

(Observations spanning multiple months or years are excluded from time charts)

Stewardship Responsibility

References

Additional ReferencesLegend: View Online Publication
Do you know of a citation we're missing?
- Gustafson, D. L. 1990. Ecology of aquatic insects in the Gallatin River drainage. Ph.D. Dissertation. Bozeman, MT: Montana State University. 194 p.
- Mcclay, W. 1968. Effects of controlled flow reductions on aquatic insects in a stream riffle. M.Sc. Thesis. Bozeman, MT: Montana State University. 29 p.
- Muhlfeld, C.C., T.J. Cline, J.J. Giersch, E. Peitzsch, C. Florentine, D. Jacobsen, and S. Hotaling. 2020. Specialized meltwater biodiversity persists despite widespread deglaciation. Proceedings of the National Academy of Sciences May 2020, 202001697; DOI: 10.1073/pnas.2001697117
- Richards, D.C. 1996. The use of aquatic macroinvertebrates as water quality indicators in mountain streams in Montana. M.Sc. Thesis. Bozeman, Montana: Montana State University. 192 p.
- Wells, E.A. 1986. Alpine limnology of selected water bodies on the Beartooth Plateau, Montana, with emphasis on benthos. Ph.D. Dissertation. Bozeman, MT: Montana State University. 401 p.
Web Search Engines for Articles on "A Mayfly"
Additional Sources of Information Related to "Insects"

Take us with you!

Look for this PDF icon as you search and browse. Click it to build a custom PDF with species shown on that page or for all the species within that taxonomic level. To create your own list of species, use the PDF Creator tool at the bottom of the Advanced Search page.

Here's some links if you want to download a whole group.

Dragonflies / Damselflies

Ferns and allies

Conifers

Flowering Plants (Dicots)

Flowering Plants (Monocots)

Citation for data on this website:
A Mayfly — Baetis bicaudatus. Montana Field Guide. Montana Natural Heritage Program. Retrieved on November 24, 2024, from https://FieldGuide.mt.gov/speciesDetail.aspx?elcode=IIEPH26030