Insects & Arthropods of Colorado

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

105,358

recent observations

50

species listed

50

insects & arthropods

Naturalists have logged 105,358 research-grade observations across the 50 most-recorded species in Colorado. The most frequently seen is the Western Honey Bee, with 6,937 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

6,937 observations

Bold Jumping Spider

Phidippus audax

4,870 observations

Convergent Lady Beetle

Hippodamia convergens

3,970 observations

Seven-spotted Lady Beetle

Coccinella septempunctata

3,832 observations

White-lined Sphinx

3,827 observations · iNaturalist

Hunt's Bumble Bee

3,644 observations · iNaturalist

3,531 observations

European Paper Wasp

Polistes dominula

2,801 observations

Two-tailed Swallowtail

Papilio multicaudata

2,800 observations · iNaturalist

Asian Lady Beetle

Harmonia axyridis

2,741 observations

Two-striped Grasshopper

Melanoplus bivittatus

2,699 observations · iNaturalist

Danaus plexippus

2,541 observations

Japanese Beetle

Popillia japonica

2,503 observations

European Mantis

Mantis religiosa

2,418 observations

Weidemeyer's Admiral

Limenitis weidemeyerii

2,282 observations

Police Car Moth

Gnophaela vermiculata

2,235 observations · iNaturalist

2,178 observations

Common Checkered-Skipper

Burnsius communis

2,132 observations · iNaturalist

Four-spotted Moth

2,020 observations · iNaturalist

Brown-belted Bumble Bee

Bombus griseocollis

1,917 observations

Blue Fungus Beetle

Cypherotylus californicus

1,902 observations · iNaturalist

Variegated Fritillary

Euptoieta claudia

1,854 observations

Western Black Widow

Latrodectus hesperus

1,784 observations · iNaturalist

Eastern Boxelder Bug

Boisea trivittata

1,772 observations

Rocky Mountain Parnassian

Parnassius smintheus

1,747 observations · iNaturalist

Nymphalis antiopa

1,704 observations

Western Conifer Seed Bug

Leptoglossus occidentalis

1,688 observations · iNaturalist

Band-winged Meadowhawk

Sympetrum semicinctum

1,651 observations · iNaturalist

Nevada Bumble Bee

Bombus nevadensis

1,629 observations

Golden Northern Bumble Bee

Bombus fervidus

1,576 observations

Libellula luctuosa

1,552 observations

Western Tiger Swallowtail

Papilio rutulus

1,523 observations

Small Milkweed Bug

1,496 observations

Colorado Soldier Beetle

Chauliognathus basalis

1,489 observations · iNaturalist

Variegated Meadowhawk

Sympetrum corruptum

1,478 observations · iNaturalist

Taxiles Skipper

1,460 observations · iNaturalist

Apache Jumping Spider

Phidippus apacheanus

1,425 observations · iNaturalist

American Bumble Bee

Bombus pensylvanicus

1,410 observations

Checkered White

Pontia protodice

1,401 observations · iNaturalist

Polygonia gracilis

1,352 observations

Differential Grasshopper

Melanoplus differentialis

1,283 observations

Greater Anglewing

Microcentrum rhombifolium

1,183 observations · iNaturalist

White-spotted Sawyer

Monochamus scutellatus

1,178 observations

Spotted Tussock Moth

Lophocampa maculata

1,177 observations

Vanessa atalanta

1,168 observations

Ornate Checkered Beetle

Trichodes ornatus

1,159 observations

Jagged Ambush Bug

Phymata americana

1,123 observations

Red-femured Milkweed Borer

Tetraopes femoratus

1,112 observations · iNaturalist

European Harvestman

Phalangium opilio

1,103 observations · iNaturalist

Zebra Jumping Spider

Salticus scenicus

1,101 observations · iNaturalist

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