Montana Field Guide

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- Kingdom - Animals - Animalia
  - Phylum - Spiders, Insects, and Crustaceans - Arthropoda
    - Class - Insects - Insecta
      - Order - Mayflies - Ephemeroptera
        
        Family - Siphlonurid Mayflies - Siphlonuridae
        
        Species - A Mayfly - Siphlonurus autumnalis

A Mayfly - Siphlonurus autumnalis

Special Status Species
Native Species

Global Rank: G2G4
State Rank: SNR

Agency Status
USFWS:
USFS:
BLM:

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General Description

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Species Range

Montana Range Range Descriptions

Native

Range Comments

This valid species has been known historically only from western Canada (McDunnough, 1931), Washington and Montana (Jacobus and McCafferty, 2002) . It occurs in western Montana in Crazy Beaver Spring and Cut Bank Spring and Wally Spring, Flathead County; Fisher Cap Lake, Swiftcurrent Lake, Waterton Lake, and Josephine Lake in Glacier National Park, Glacier County (McCafferty and Newell, 2007).

Observations in Montana Natural Heritage Program Database

Number of Observations: 6

(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)

Habitat

This species has been taken from rocky but somewhat quiet edgewaters along relatively large rivers in the Northwest (Jacobus and McCafferty, 2002)

Threats or Limiting Factors

All forms of stream quality degradation pose potential threats. These include siltation; pollution from agricultural and industrial waste; and hydrological alteration from drainage, dams, or withdrawal of excess water for human use.

References

Literature Cited AboveLegend: View Online Publication
- Jacobus, L.M. and W.P. McCafferty. 2002. Provancher's quebecensis mayfly species (Ephemeroptera: Leptophlebiidae, Siphlonuridae). Entomological News, 113(5): 315-317.
- McCafferty, W.P. and R.L. Newell. 2007. Insecta, Ephemeroptera: Range extensions and new state records from far western Montana, U.S.A. Check List 3:260-266.
- McDunnough, J. 1931. New species of North American Ephemeroptera. Can Entomol. 63: 82-93.
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.
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Citation for data on this website:
A Mayfly — Siphlonurus autumnalis. Montana Field Guide. Montana Natural Heritage Program. Retrieved on April 19, 2024, from https://FieldGuide.mt.gov/speciesDetail.aspx?elcode=IIEPH24110