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Checklist for Superorder Ephemeropteroidea Rohdendorf, 1968
and region Corvallis (Ravalli County, Montana, USA)


Class
 		Insecta
Linnaeus, 1758
Insects, True insects		114
423
559		Families
Genera
Species		 
Taxom
 

Subclass
 		Pterygota
Lang, 1888
Winged insects		114
423
559		Families
Genera
Species		 
Taxom
 

Infraclass
 		Palaeoptera
Crampton, 1915
Ancient winged insects		8
11
15		Families
Genera
Species		 
Taxom
 

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


List of families for Corvallis (Ravalli County)
4 Families width 3 Species
Baetidae Leach, 1815Mayflies1SpeciesTaxom
Ephemeridae Leach, 1817Burrowing mayflies1SpeciesTaxom
Heptageniidae Needham, 1901Flat-Bodied Up-Wings Heptageniidae0SpeciesTaxom
Siphlonuridae Banks, 1900Primitive Minnow Mayflies1SpeciesTaxom


Genera for Corvallis (Ravalli County)
4 Genera with 3 Species
Baetis Leach, 19231SpeciesTaxom
Hexagenia Walsh, 1829Giant Mayflies1SpeciesTaxom
Rhithrogena Eaton, 1881
March Browns0SpeciesTaxom
Siphlonurus Eaton, 18851SpeciesTaxom


Species list for Corvallis (Ravalli County)
3 Species
Baetis (Baetis) bicaudatus Dodds, 1923
Hexagenia (Hexagenia) limbata Serville, 1829Burrowing mayfly
Siphlonurus occidentalis Eaton, 1885

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