Species list, Checklist of Superfamily Heptagenioidea for Snohomish County (Washington, USA)

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Checklist for Superfamily Heptagenioidea Needham, 1901
and region Snohomish County (Washington, USA)

Class	Insecta Linnaeus, 1758 Insects, True insects	293 1366 2002	Families Genera Species	Taxom
Subclass	Pterygota Lang, 1888 Winged insects	292 1365 2001	Families Genera Species	Taxom
Infraclass	Palaeoptera Crampton, 1915 Ancient winged insects	16 58 137	Families Genera Species	Taxom
Superorder	Ephemeropteroidea Rohdendorf, 1968	8 18 16	Families Genera Species	Taxom
Order	Ephemeroptera Hyatt & Arms, 1891 Mayflies, Mayflies Anglers Curse, Mayflies Greendrakes	8 18 16	Families Genera Species	Taxom
Suborder	Pisciforma McCafferty, 1991	4 13 12	Families Genera Species	Taxom
Superfamily	Heptagenioidea Needham, 1901	2 7 8	Families Genera Species	Taxom

List of families for Snohomish County
2 Families width 8 Species

Heptageniidae Needham, 1901	Flat-Bodied Up-Wings Heptageniidae	7	Species	Taxom
Oligoneuriidae Ulmer, 1914	Brushleg Mayflies	1	Species	Taxom

Genera for Snohomish County
7 Genera with 8 Species

Species list for Snohomish County
8 Species

Epeorus longimanus Eaton, 1885
Heptagenia (Heptagenia) elegantula Eaton, 1885
Isonychia (Isonychia) bicolor Walker, 1853	Leadwinged coachman
Maccaffertium ithaca Clemens & Le..., 1924	Cahill
Maccaffertium terminatum Walsh, 1862
Maccaffertium vicarium Walker, 1853	American brown
Stenacron interpunctatum Say, 1839	Ginger quill
Stenonema femoratum Say, 1823	Dark Cahill

Subnodes of Heptagenioidea with occurrences in Snohomish County

Family	Heptageniidae Needham, 1901 Flat-Bodied Up-Wings Heptageniidae, Flat-headed mayflies, Flatheaded Mayflies, Stream mayflies, stream mayfly	6 7	Genera Species	Taxom
Family	Oligoneuriidae ♰ Ulmer, 1914 Brushleg Mayflies, Bush legged mayflies	1 1	Genus Species	Taxom

Links, sources and further information

Heptagenioidea at itis.gov