Insects & Arthropods of Colorado

The insects & arthropods most often spotted in Colorado, ranked by recent research-grade observations.

110,254

recent observations

50

species listed

50

insects & arthropods

Naturalists have logged 110,254 research-grade observations across the 50 most-recorded species in Colorado. The most frequently seen is the Western Honey Bee, with 7,393 recorded sightings.

Rarer finds confirmed in Colorado include Ambush Bug - uncommon enough that a sighting is worth logging.

Most-observed insects & arthropods in Colorado

Western Honey Bee

7,393 observations

Bold Jumping Spider

Phidippus audax

5,124 observations

Convergent Lady Beetle

Hippodamia convergens

4,130 observations

4,040 observations

Seven-spotted Lady Beetle

Coccinella septempunctata

4,013 observations

White-lined Sphinx

4,002 observations · iNaturalist

Hunt's Bumble Bee

3,710 observations · iNaturalist

European Paper Wasp

Polistes dominula

3,042 observations

Danaus plexippus

2,944 observations

Two-tailed Swallowtail

Papilio multicaudata

2,913 observations · iNaturalist

Asian Lady Beetle

Harmonia axyridis

2,842 observations

Two-striped Grasshopper

Melanoplus bivittatus

2,802 observations · iNaturalist

Japanese Beetle

Popillia japonica

2,655 observations

European Mantis

Mantis religiosa

2,577 observations

Weidemeyer's Admiral

Limenitis weidemeyerii

2,324 observations

Common Checkered-Skipper

Burnsius communis

2,272 observations · iNaturalist

Police Car Moth

Gnophaela vermiculata

2,253 observations · iNaturalist

2,245 observations

Four-spotted Moth

2,093 observations · iNaturalist

Western Black Widow

Latrodectus hesperus

1,977 observations

Blue Fungus Beetle

Cypherotylus californicus

1,936 observations · iNaturalist

Brown-belted Bumble Bee

Bombus griseocollis

1,928 observations

Variegated Fritillary

Euptoieta claudia

1,901 observations

Eastern Boxelder Bug

Boisea trivittata

1,796 observations

Rocky Mountain Parnassian

Parnassius smintheus

1,769 observations · iNaturalist

Western Conifer Seed Bug

Leptoglossus occidentalis

1,727 observations · iNaturalist

Nymphalis antiopa

1,723 observations

Band-winged Meadowhawk

Sympetrum semicinctum

1,689 observations · iNaturalist

Nevada Bumble Bee

Bombus nevadensis

1,663 observations

Colorado Soldier Beetle

Chauliognathus basalis

1,599 observations · iNaturalist

Variegated Meadowhawk

Sympetrum corruptum

1,595 observations · iNaturalist

Libellula luctuosa

1,588 observations

Golden Northern Bumble Bee

Bombus fervidus

1,588 observations

Apache Jumping Spider

Phidippus apacheanus

1,567 observations · iNaturalist

Small Milkweed Bug

1,536 observations

Western Tiger Swallowtail

Papilio rutulus

1,526 observations

Taxiles Skipper

1,468 observations · iNaturalist

American Bumble Bee

Bombus pensylvanicus

1,435 observations

Checkered White

Pontia protodice

1,421 observations · iNaturalist

Polygonia gracilis

1,368 observations

Differential Grasshopper

Melanoplus differentialis

1,343 observations

Red-femured Milkweed Borer

Tetraopes femoratus

1,271 observations · iNaturalist

Greater Anglewing

Microcentrum rhombifolium

1,230 observations · iNaturalist

Jagged Ambush Bug

Phymata americana

1,228 observations

Spotted Tussock Moth

Lophocampa maculata

1,218 observations

White-spotted Sawyer

Monochamus scutellatus

1,186 observations

Vanessa atalanta

1,180 observations

Ornate Checkered Beetle

Trichodes ornatus

1,163 observations

Gray Hairstreak

Strymon melinus

1,136 observations

Zebra Jumping Spider

Salticus scenicus

1,125 observations · iNaturalist

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