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Family Baetidae - Small Minnow Mayflies

Baetidae - Callibaetis - male Mayfly-4701 - Callibaetis pictus DSCF6716 - Callibaetis ferrugineus Mayfly - Callibaetis ferrugineus - female Mayfly larva and sub-imago immediately after emergence - Callibaetis Small Minnow Mayfly - Callibaetis ferrugineus - female Mayfly - Callibaetis Baetid Nymph
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Class Insecta (Insects)
Order Ephemeroptera (Mayflies)
Family Baetidae (Small Minnow Mayflies)
Numbers
Neartica lists 18 North American genera.
Size
Usually less than 15 mm.
Remarks
"Peterson's Field Guide to Insects" (1) notes on p. 66 that the hindwings are sometimes lacking.
Print References
"Peterson's Field Guide to Insects" (1)
Internet References
University of Michigan has some info and pics of Callibaetis sp.
The USGS Northern Prairie Wildlife Research Center has distribution maps of many Baetidae species.
Works Cited
1.A Field Guide to Insects
By Richard E. White, Donald J. Borror, Roger Tory Peterson