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Checklist for Superorder Ephemeropteroidea Rohdendorf, 1968
and region Littleton (Arapahoe County, Colorado, USA)


Class
 		Insecta
Linnaeus, 1758
Insects, True insects		54
139
149		Families
Genera
Species		 
Taxom
 

Subclass
 		Pterygota
Lang, 1888
Winged insects		54
139
149		Families
Genera
Species		 
Taxom
 

Infraclass
 		Palaeoptera
Crampton, 1915
Ancient winged insects		5
5
4		Families
Genera
Species		 
Taxom
 

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


List of families for Littleton (Arapahoe County)
3 Families width 2 Species
Baetidae Leach, 1815Mayflies1SpeciesTaxom
Ephemerellidae Klapálek, 1909Blue-Winged Olive Ephemerellidae1SpeciesTaxom
Heptageniidae Needham, 1901Flat-Bodied Up-Wings Heptageniidae0SpeciesTaxom


Genera for Littleton (Arapahoe County)
3 Genera with 2 Species
Baetis Leach, 19211SpeciesTaxom
Ephemerella Walsh, 1862And Pale Duns1SpeciesTaxom
Heptagenia Walsh, 1863
0SpeciesTaxom


Species list for Littleton (Arapahoe County)
2 Species
Baetis (Baetis) flavistriga McDunnough, 1921Alpine draba
Ephemerella (Ephemerella) excrucians Walsh, 1862Bluewinged olive dun

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