Species list, Checklist of Superorder Ephemeropteroidea for Williamstown (Dauphin County, Pennsylvania, 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

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Checklist for Superorder Ephemeropteroidea Rohdendorf, 1968
and region Williamstown (Dauphin County, Pennsylvania, USA)

Class	Insecta Linnaeus, 1758 Insects, True insects	79 126 137	Families Genera Species	Taxom
Subclass	Pterygota Lang, 1888 Winged insects	79 126 137	Families Genera Species	Taxom
Infraclass	Palaeoptera Crampton, 1915 Ancient winged insects	9 16 22	Families Genera Species	Taxom
Superorder	Ephemeropteroidea Rohdendorf, 1968	2 2 2	Families Genera Species	Taxom

List of families for Williamstown (Dauphin County)
2 Families width 2 Species

Ephemeridae Leach, 1817	Burrowing mayflies	1	Species	Taxom
Heptageniidae Needham, 1901	Flat-Bodied Up-Wings Heptageniidae	1	Species	Taxom

Genera for Williamstown (Dauphin County)
2 Genera with 2 Species

Hexagenia Walsh, 1829	Giant Mayflies	1	Species	Taxom
Stenacron Jensen, 1839	Light Cahills	1	Species	Taxom

Species list for Williamstown (Dauphin County)
2 Species

Hexagenia (Hexagenia) limbata Serville, 1829	Burrowing mayfly
Stenacron interpunctatum Say, 1839	Ginger quill

Subnodes of Ephemeropteroidea with occurrences in Williamstown (Dauphin County)

Order

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

2
2
2

Families
Genera
Species