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Checklist for Superorder Ephemeropteroidea Rohdendorf, 1968
and region O´Brien County (Iowa, USA)


Class
 		Insecta
Linnaeus, 1758
Insects, True insects		105
462
665		Families
Genera
Species		 
Taxom
 

Subclass
 		Pterygota
Lang, 1888
Winged insects		105
462
665		Families
Genera
Species		 
Taxom
 

Infraclass
 		Palaeoptera
Crampton, 1915
Ancient winged insects		10
32
82		Families
Genera
Species		 
Taxom
 

Superorder
 		Ephemeropteroidea
Rohdendorf, 1968
2
3
4		Families
Genera
Species		 
Taxom
 


List of families for O´Brien County
2 Families width 4 Species
Caenidae Newman, 1853Small square-gill mayflies2SpeciesTaxom
Heptageniidae Needham, 1901Flat-Bodied Up-Wings Heptageniidae2SpeciesTaxom


Genera for O´Brien County
3 Genera with 4 Species
Caenis Stephens, 19072SpeciesTaxom
Heptagenia Walsh, 18851SpeciesTaxom
Stenonema Traver, 18231SpeciesTaxom


Species list for O´Brien County
4 Species
Caenis (Caenis) amica Hagen, 1861Heterosporous ferns
Caenis (Caenis) latipennis Banks, 1907Graywinged sulphur dun
Heptagenia (Heptagenia) elegantula Eaton, 1885
Stenonema femoratum Say, 1823Dark Cahill

Subnodes of Ephemeropteroidea with occurrences in O´Brien County
OrderEphemeroptera
Hyatt & Arms, 1891
Mayflies, Mayflies Anglers Curse, Mayflies Greendrakes, Mayflies Olives Etc, mayfly, Shadflies		2
3
4		Families
Genera
Species
Taxom