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Montana Field Guide

Montana Field Guides

A Mayfly - Baetis bicaudatus


Global Rank: G5
State Rank: S5

Agency Status
USFWS:
USFS:
BLM:


 

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General Description
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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.

Summary of Observations Submitted for Montana
Number of Observations: 164

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Relative Density

Recency

 

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



References
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Citation for data on this website:
A Mayfly — Baetis bicaudatus.  Montana Field Guide.  .  Retrieved on , from