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Genus Stenonema

Flatheaded Mayfly - Stenonema femoratum Mayfly - Stenonema femoratum - male Mayfly - Stenonema femoratum - male Mayfly - Stenonema femoratum - male Mayfly? - Stenonema femoratum Mayfly - Stenonema femoratum Stenonema femoratum - female mayfly ? - Stenonema femoratum
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Ephemeroptera (Mayflies)
Suborder Pisciforma
Superfamily Heptagenioidea
Family Heptageniidae (Flatheaded Mayflies)
Genus Stenonema
Synonyms and other taxonomic changes
some workers [e.g., (1)] include here members of Maccaffertium
Explanation of Names
Stenonema Traver 1933
Numbers
monotypic genus(2), but see above
Range
nearctic(2)