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For the United States & Canada
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Genus Baetis

Baetidae, Baetis intercalaris - Baetis intercalaris Baetidae, genus Baetis - Baetis Baetidae, Baetis flavistriga - Baetis flavistriga Baetis flavistriga - male Baetis flavistriga Small brown mayfly - Baetis  small mayfly - Baetis brunneicolor Mayfly - Baetis intercalaris
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Ephemeroptera (Mayflies)
Suborder Pisciforma
Family Baetidae (Small Minnow Mayflies)
Genus Baetis
Explanation of Names
Baetis Leach 1815
the largest mayfly genus, with 20 spp. in our area(1) and >150 worldwide(2)
worldwide, by far most diverse in the Palaearctic, poorly represented in the tropics and essentially restricted to the n. hemisphere(2)