Species list, Checklist of Infraclass Palaeoptera (Ancient winged insects) for Littleton (Arapahoe County, Colorado, 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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INSECTOIDGERENGDARK LIGHT

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Checklist for Infraclass Palaeoptera Crampton, 1915 (Ancient winged insects)
and region Littleton (Arapahoe County, Colorado, USA)

Class	Insecta Linnaeus, 1758 Insects, True insects	54 139 149	Families Genera Species	Taxom
Subclass	Pterygota Lang, 1888 Winged insects	54 139 149	Families Genera Species	Taxom
Infraclass	Palaeoptera Crampton, 1915 Ancient winged insects	5 5 4	Families Genera Species	Taxom

List of families for Littleton (Arapahoe County)
5 Families width 4 Species

Baetidae Leach, 1815	Mayflies	1	Species	Taxom
Ephemerellidae Klapálek, 1909	Blue-Winged Olive Ephemerellidae	1	Species	Taxom
Gomphidae Rambur, 1842	Club-tailed dragonflies	1	Species	Taxom
Heptageniidae Needham, 1901	Flat-Bodied Up-Wings Heptageniidae	0	Species	Taxom
Libellulidae Rambur, 1842	Chasers	1	Species	Taxom

Genera for Littleton (Arapahoe County)
5 Genera with 4 Species

Baetis Leach, 1921		1	Species	Taxom
Ephemerella Walsh, 1862	And Pale Duns	1	Species	Taxom
Gomphus Leach, 1854	Club-Tailed Dragonflies	1	Species	Taxom
Heptagenia Walsh, 1863		0	Species	Taxom
Leucorrhinia Brittinger, 1861	Whitefaces	1	Species	Taxom

Species list for Littleton (Arapahoe County)
4 Species

Baetis (Baetis) flavistriga McDunnough, 1921	Alpine draba
Ephemerella (Ephemerella) excrucians Walsh, 1862	Bluewinged olive dun
Gomphus (Gomphus) exilis Selys, 1854	Lancet Clubtail
Leucorrhinia intacta Hagen, 1861	Dot-tailed Whiteface

Subnodes of Palaeoptera with occurrences in Littleton (Arapahoe County)

Superorder	Ephemeropteroidea Rohdendorf, 1968	3 3 2	Families Genera Species	Taxom
Superorder	Odonatoptera Martynov, 1932	2 2 2	Families Genera Species	Taxom

Links, sources and further information

Palaeoptera at itis.gov