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Arthropods of Colorado

Information on many arthropods of importance or interest in Colorado has been developed by the Colorado State Extension Entomology program. Many of these are treated in Extension Fact Sheets that can be accessed at the CSU Extension Insect Publications. Those listed below are indicated by their publication number. The currently available sheets are listed below, organized by taxa. Additional sheets will be developed in the future.

  • Fact sheets on exotic insects, not currently found in Colorado, are listed preceded by +
  • The remaining publications are a new series, Colorado Arthropods of Interest, and are indicated by

Arachnida (Arachnids)

Solifugae (Windscorpions/Sunspiders)

Scorpiones (Scorpions)

Opiliones (Daddylonglegs, Harvestmen)

Pseudoscorpiones (Pseudoscorpions)

Crustacea (Crustaceans)

Diplopoda (Millipedes)

Hexapoda (Non-entognathous hexapods)

Collembola (Springtails)

Diplura (Diplurans)

Protura (Proturans)

Hexapoda (Insects)

Blattodea (Cockroaches and Termites)

Dermaptera (Earwigs)

Ephemeroptera (Mayflies)

Megaloptera (Dobsonflies and Fishflies)

Microcoryphia (Jumping Bristletails)

Neuroptera (Lacewings, Antlions, and Allies)

Odonata (Dragonflies and Damselflies)


Phthiraptera (Lice)

Plecoptera (Stoneflies)

Psocoptera (Booklice and Barklice)


Thysanoptera (Thrips)

Siphonaptera (Fleas)

Strepsiptera (Twisted-wing Parasites)

Trichoptera (Caddisflies)

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