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Checklist for Superorder Ephemeropteroidea Rohdendorf, 1968
and region Powder River County (Montana, USA)


Class
 		Insecta
Linnaeus, 1758
Insects, True insects		118
348
452		Families
Genera
Species		 
Taxom
 

Subclass
 		Pterygota
Lang, 1888
Winged insects		118
348
452		Families
Genera
Species		 
Taxom
 

Infraclass
 		Palaeoptera
Crampton, 1915
Ancient winged insects		9
15
29		Families
Genera
Species		 
Taxom
 

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


List of families for Powder River County
4 Families width 1 Species
Baetidae Leach, 1815Mayflies1SpeciesTaxom
Leptophlebiidae Banks, 1900Leptophlebiids0SpeciesTaxom
Heptageniidae Needham, 1901Flat-Bodied Up-Wings Heptageniidae0SpeciesTaxom
Leptohyphidae Landa & Soldán, 1985Little Stout Crawler Mayflies0SpeciesTaxom


Genera for Powder River County
4 Genera with 1 Species
Baetis Leach, 19231SpeciesTaxom
Paraleptophlebia Lestage, 1917
0SpeciesTaxom
Rhithrogena Eaton, 1881
March Browns0SpeciesTaxom
Tricorythodes Ulmer, 1920
0SpeciesTaxom


Species list for Powder River County
1 Species
Baetis (Baetis) tricaudatus Dodds, 1923Light blue dun

Subnodes of Ephemeropteroidea with occurrences in Powder River County
OrderEphemeroptera
Hyatt & Arms, 1891
Mayflies, Mayflies Anglers Curse, Mayflies Greendrakes, Mayflies Olives Etc, mayfly, Shadflies		4
4
1		Families
Genera
Species
Taxom