Species list, Checklist of Superorder Ephemeropteroidea for Arlington (Snohomish County, Washington, USA)

Ants	Arachnids
Bees	Beetles
Booklice	Bugs
Bumblebees	Butterflies
Cicadas	Crane flies
Dragonflies	Earwigs
Flies	Isopods
Locusts	Mantises
Mayflies	Mosquitoes
Myriapods	Net-winged
Plant-parasitic	Scorpion flies
Termites	Wasps

Taxonomy & Distribution
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Snohomish County

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INSECTOIDGERENGDARK LIGHT

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Checklist for Superorder Ephemeropteroidea Rohdendorf, 1968
and region Arlington (Snohomish County, Washington, USA)

Class	Insecta Linnaeus, 1758 Insects, True insects	99 215 240	Families Genera Species	Taxom
Subclass	Pterygota Lang, 1888 Winged insects	99 215 240	Families Genera Species	Taxom
Infraclass	Palaeoptera Crampton, 1915 Ancient winged insects	7 21 31	Families Genera Species	Taxom
Superorder	Ephemeropteroidea Rohdendorf, 1968	2 2 1	Families Genera Species	Taxom

List of families for Arlington (Snohomish County)
2 Families width 1 Species

Baetidae Leach, 1815	Mayflies	0	Species	Taxom
Heptageniidae Needham, 1901	Flat-Bodied Up-Wings Heptageniidae	1	Species	Taxom

Genera for Arlington (Snohomish County)
2 Genera with 1 Species

Callibaetis Eaton, 1881	Speckled Duns	0	Species	Taxom
Heptagenia Walsh, 1885		1	Species	Taxom

Species list for Arlington (Snohomish County)
1 Species

Heptagenia (Heptagenia) elegantula Eaton, 1885

Subnodes of Ephemeropteroidea with occurrences in Arlington (Snohomish County)

Order

Ephemeroptera
Hyatt & Arms, 1891
Mayflies, Mayflies Anglers Curse, Mayflies Greendrakes, Mayflies Olives Etc, mayfly, Shadflies

2
2
1

Families
Genera
Species