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Montana Field Guide

Montana Field Guides

A Mayfly - Camelobaetidius warreni


Global Rank: G5
State Rank: SNR

Agency Status
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General Description
Larvae of Camelobaetidius are differentiated from those of all other Baetids by the presence of spatulate tarsal claws.

Diagnostic Characteristics
Larvae of Camelobaetidius are differentiated from those of all other Baetids by the presence of spatulate tarsal claws.

Range Comments
Camelobaetidius warreni is the most widespread species of Camelobaetidius in North America and occurs in most western states. In Canada, it is known only from Saskatchewan although it likely also occurs in Alberta (Webb 2002). Camelobaetidius are primarily found in warm, silty rivers in the southwestern United States, Mexico, and Central and South America. C. warreni is the only species found this far North.

Summary of Observations Submitted for Montana
Number of Observations: 38

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Relative Density

Recency

 

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



Migration
The adult stage fo this mayfly flies upstream to lay eggs, but generally does not fly overland to seek out new places.

Habitat
Camelobaetidius are primarily found in warm, silty rivers in the central & southwestern United States, Mexico, and Central and South America. Larvae in a Canadian study were found near the shore over a silty gravel and rubble substrate in moderate current.

Threats or Limiting Factors
Threats to this species include dams and diversions and excessive siltation that smothers their sandy bottom habitats

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