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Genus Ephemerella

Mayfly 3 - Ephemerella invaria - male Spiny Crawler Nymph - Ephemerella subvaria Ephemerella dorothea Ephemerella dorothea infrequens - voucher specimen, in alcohol - Ephemerella dorothea Arthropoda - Ephemerella invaria Ephemerella invaria   - Ephemerella invaria Ephemeroptera - Ephemerella invaria
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Ephemeroptera (Mayflies)
Suborder Furcatergalia
Infraorder Pannota
Superfamily Ephemerelloidea
Family Ephemerellidae (Spiny Crawler Mayflies)
Genus Ephemerella
Explanation of Names
Ephemerella Walsh 1862
Numbers
17 spp. in our area (+some dubious ones)(1) + 3 more in the Palaearctic(2)
Range
holarctic genus; 3 of our spp. (E. aurivillii, E. nuda, E. mucronata) are holarctic(2)
Remarks
E. floripara McCafferty 1985 not listed in(2)