Species list, Checklist of Infraorder Orthosterni for Cook County (Illinois, 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 Infraorder Orthosterni Pocock, 1911
and region Cook County (Illinois, USA)

Class	Arachnida Lamarck, 1801 Arachnids	60 176 255	Families Genera Species	Taxom
Subclass	Dromopoda Shultz, 1990	8 10 12	Families Genera Species	Taxom
Order	Scorpiones C. L. Koch, 1837 Scorpion, Scorpions	2 2 2	Families Genera Species	Taxom
Suborder	Neoscorpionina Thorell & Lindström, 1885	2 2 2	Families Genera Species	Taxom
Infraorder	Orthosterni Pocock, 1911	2 2 2	Families Genera Species	Taxom

List of families for Cook County (Illinois)
2 Families width 2 Species

Buthidae C. L. Koch, 1837	Arrowbreasted scorpions	2	Species	Taxom
Scorpionidae Pierre André..., 1802	Largeclaw scorpions	0	Species	Taxom

Genera for Cook County (Illinois)
2 Genera with 2 Species

Centruroides Marx, 1863	Bark scorpions	2	Species	Taxom
Heteronebo Pocock, 1899		0	Species	Taxom

Species list for Cook County (Illinois)
2 Species

Centruroides gracilis Latreille, 1804	Alacran azul {blue scorpion}
Centruroides vittatus Say, 1863	Bark scorpion

Subnodes of Orthosterni with occurrences in Cook County (Illinois)

Superfamily	Buthoidea Koch, 1837	1 1 2	Family Genus Species	Taxom
Superfamily	Scorpionoidea Leach, 1815	1 1 0	Family Genus Species	Taxom