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A Mayfly - Camelobaetidius warreni
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.
Observations in Montana Natural Heritage Program Database
Number of Observations: 39
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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.
Stewardship Responsibility
Threats or Limiting Factors
Threats to this species include dams and diversions and excessive siltation that smothers their sandy bottom habitats
References
- Additional ReferencesLegend:
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Do you know of a citation we're missing?- Peterson, D.A., Clark, M.L., Foster, Katharine, Wright, P.R., and Boughton, G.K., 2010, Assessment of ecological conditions and potential effects of water produced from coalbed natural gas development on biological communities in streams of the Powder River structural basin, Wyoming and Montana, 2005–08: U.S. Geological Survey Scientific Investigations Report 2010–5124, 84 p.
Webb, J.M. 2002. The Mayflies of Saskatchewan. M.Sc. thesis, University of Saskatchewan, Saskatoon.
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