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Checklist for Superorder Ephemeropteroidea Rohdendorf, 1968
and region Clear Lake (Skagit County, Washington, USA)


Class
 		Insecta
Linnaeus, 1758
Insects, True insects		53
171
191		Families
Genera
Species		 
Taxom
 

Subclass
 		Pterygota
Lang, 1888
Winged insects		53
171
191		Families
Genera
Species		 
Taxom
 

Infraclass
 		Palaeoptera
Crampton, 1915
Ancient winged insects		9
21
31		Families
Genera
Species		 
Taxom
 

Superorder
 		Ephemeropteroidea
Rohdendorf, 1968
3
4
4		Families
Genera
Species		 
Taxom
 


List of families for Clear Lake (Skagit County)
3 Families width 4 Species
Caenidae Newman, 1853Small square-gill mayflies1SpeciesTaxom
Ephemeridae Leach, 1817Burrowing mayflies1SpeciesTaxom
Heptageniidae Needham, 1901Flat-Bodied Up-Wings Heptageniidae2SpeciesTaxom


Genera for Clear Lake (Skagit County)
4 Genera with 4 Species
Caenis Stephens, 19071SpeciesTaxom
Hexagenia Walsh, 1829Giant Mayflies1SpeciesTaxom
Stenacron Jensen, 1839Light Cahills1SpeciesTaxom
Stenonema Traver, 18231SpeciesTaxom


Species list for Clear Lake (Skagit County)
4 Species
Caenis (Caenis) latipennis Banks, 1907Graywinged sulphur dun
Hexagenia (Hexagenia) limbata Serville, 1829Burrowing mayfly
Stenacron interpunctatum Say, 1839Ginger quill
Stenonema femoratum Say, 1823Dark Cahill

Subnodes of Ephemeropteroidea with occurrences in Clear Lake (Skagit County)
OrderEphemeroptera
Hyatt & Arms, 1891
Mayflies, Mayflies Anglers Curse, Mayflies Greendrakes, Mayflies Olives Etc, mayfly, Shadflies		3
4
4		Families
Genera
Species
Taxom