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Checklist for Superorder Ephemeropteroidea Rohdendorf, 1968
and region Smith River (Del Norte County, California, USA)


Class
 		Insecta
Linnaeus, 1758
Insects, True insects		23
31
26		Families
Genera
Species		 
Taxom
 

Subclass
 		Pterygota
Lang, 1888
Winged insects		23
31
26		Families
Genera
Species		 
Taxom
 

Infraclass
 		Palaeoptera
Crampton, 1915
Ancient winged insects		3
3
2		Families
Genera
Species		 
Taxom
 

Superorder
 		Ephemeropteroidea
Rohdendorf, 1968
2
2
1		Families
Genera
Species		 
Taxom
 


List of families for Smith River (Del Norte County)
2 Families width 1 Species
Ephemerellidae Klapálek, 1909Blue-Winged Olive Ephemerellidae1SpeciesTaxom
Heptageniidae Needham, 1901Flat-Bodied Up-Wings Heptageniidae0SpeciesTaxom


Genera for Smith River (Del Norte County)
2 Genera with 1 Species
Ephemerella Walsh, 1853And Pale Duns1SpeciesTaxom
Rhithrogena Eaton, 1881
March Browns0SpeciesTaxom


Species list for Smith River (Del Norte County)
1 Species
Ephemerella invaria Walker, 1853Chocolate dun

Subnodes of Ephemeropteroidea with occurrences in Smith River (Del Norte County)
OrderEphemeroptera
Hyatt & Arms, 1891
Mayflies, Mayflies Anglers Curse, Mayflies Greendrakes, Mayflies Olives Etc, mayfly, Shadflies		2
2
1		Families
Genera
Species
Taxom