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Checklist for Superorder Ephemeropteroidea Rohdendorf, 1968
and region Sheridan (Yamhill County, Oregon, USA)


Class
 		Insecta
Linnaeus, 1758
Insects, True insects		49
106
140		Families
Genera
Species		 
Taxom
 

Subclass
 		Pterygota
Lang, 1888
Winged insects		49
106
140		Families
Genera
Species		 
Taxom
 

Infraclass
 		Palaeoptera
Crampton, 1915
Ancient winged insects		10
23
35		Families
Genera
Species		 
Taxom
 

Superorder
 		Ephemeropteroidea
Rohdendorf, 1968
5
8
8		Families
Genera
Species		 
Taxom
 


List of families for Sheridan (Yamhill County)
5 Families width 8 Species
Baetidae Leach, 1815Mayflies5SpeciesTaxom
Caenidae Newman, 1853Small square-gill mayflies1SpeciesTaxom
Ephemerellidae Klapálek, 1909Blue-Winged Olive Ephemerellidae1SpeciesTaxom
Heptageniidae Needham, 1901Flat-Bodied Up-Wings Heptageniidae1SpeciesTaxom
Ephemeridae Leach, 1817Burrowing mayflies0SpeciesTaxom


Genera for Sheridan (Yamhill County)
8 Genera with 8 Species
Acentrella Bengtsson, 19261SpeciesTaxom
Baetis Leach, 19233SpeciesTaxom
Caenis Stephens, 19071SpeciesTaxom
Callibaetis Eaton, 1862Speckled Duns1SpeciesTaxom
Ephemerella Walsh, 1862And Pale Duns1SpeciesTaxom
Heptagenia Walsh, 1863
0SpeciesTaxom
Hexagenia Walsh, 1863
Giant Mayflies0SpeciesTaxom
Stenacron Jensen, 1839Light Cahills1SpeciesTaxom


Species list for Sheridan (Yamhill County)
8 Species
Acentrella insignificans McDunnough, 1926
Baetis (Baetis) flavistriga McDunnough, 1921Alpine draba
Baetis (Baetis) intercalaris McDunnough, 1921Alpine draba
Baetis (Baetis) tricaudatus Dodds, 1923Light blue dun
Caenis (Caenis) latipennis Banks, 1907Graywinged sulphur dun
Callibaetis ferrugineus Walsh, 1862Red Speckled Dun
Ephemerella (Ephemerella) excrucians Walsh, 1862Bluewinged olive dun
Stenacron interpunctatum Say, 1839Ginger quill

Subnodes of Ephemeropteroidea with occurrences in Sheridan (Yamhill County)
OrderEphemeroptera
Hyatt & Arms, 1891
Mayflies, Mayflies Anglers Curse, Mayflies Greendrakes, Mayflies Olives Etc, mayfly, Shadflies		5
8
8		Families
Genera
Species
Taxom