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Montana Field Guide

Montana Field Guides

A Mayfly - Callibaetis ferrugineus

Native Species

Global Rank: G5
State Rank: SNR


Agency Status
USFWS:
USFS:
BLM:


 

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General Description
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Diagnostic Characteristics
Larvae of C. ferrugineus can be distinguished from those of C. pallidus by the presence of a dark sub-apical band on the femora. (Check 1982) noted that the dark band is absent in some western populations of C. ferrugineus; the relatively short (5-7.5 x longer than wide) apical seta of the tarsi will differentiate these specimens from C. pallidus (Webb 2002).

Observations in Montana Natural Heritage Program Database
Number of Observations: 99

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Relative Density

Recency

 

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



Habitat
Callibaetis is common in lakes, permanent ponds, and slow-flowing portions of streams throughout North America.

Reproductive Characteristics
Adults were collected between May and September and it is likely that more
than one generation occurs per year.


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