A Sand-dwelling Mayfly - Homoeoneuria alleni
Species of Concern
Global Rank:
G4
State Rank:
S2
Agency Status
USFWS:
USFS:
BLM:
FWP Conservation Tier:
External Links
General Description
This burrowing (body-type & behavior) mayfly is an inhabitant of large, warmwater turbid rivers with shifting sand/gravel substrates and depositional silted habitat areas. This species is a filtering collector feeder, and has long hairs on its fore-legs to perform this filtering-function.
General Distribution
Montana Range
Summary of Observations Submitted for Montana
Number of Observations: 5
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Relative Density
Recency
(Records associated with a range of dates are excluded from time charts)
Distribution Comments
Rangewide, H. alleni is known to occur in Saskatchewan and the Intermountain West (CO, MT, NM, UT) (NatureServe 2006). In Montana, H. alleni has been reported from 3 sites on the Powder River and 1 site in the lower Yellowstone River (Stagliano 2006; Gustafson, unpublished).
Habitat
This species is associated with and digs its burrows within the sandy/silted depositional areas of larger, perennially flowing prairie rivers with sand-gravel dominated bottoms.
Food Habits
This species is a filtering collector, sifting and eating small-medium sized organic particles from the water flowing over its burrow.
Threats or Limiting Factors
Threats to this species include dams and diversions altering flow patterns and excessive siltation that can smother their sandy bottom habitats.
References
- Web Search Engines for Articles on "A Sand-dwelling Mayfly"
- Additional Sources of Information Related to "Insects"
