Insects & Arthropods of Colorado

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

106,996

recent observations

50

species listed

50

insects & arthropods

Naturalists have logged 106,996 research-grade observations across the 50 most-recorded species in Colorado. The most frequently seen is the Western Honey Bee, with 7,083 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

7,083 observations

Bold Jumping Spider

Phidippus audax

4,948 observations

Convergent Lady Beetle

Hippodamia convergens

4,039 observations

Seven-spotted Lady Beetle

Coccinella septempunctata

3,899 observations

White-lined Sphinx

3,873 observations · iNaturalist

Hunt's Bumble Bee

3,675 observations · iNaturalist

3,599 observations

European Paper Wasp

Polistes dominula

2,890 observations

Two-tailed Swallowtail

Papilio multicaudata

2,858 observations · iNaturalist

Asian Lady Beetle

Harmonia axyridis

2,790 observations

Two-striped Grasshopper

Melanoplus bivittatus

2,742 observations · iNaturalist

Danaus plexippus

2,643 observations

Japanese Beetle

Popillia japonica

2,583 observations

European Mantis

Mantis religiosa

2,495 observations

Weidemeyer's Admiral

Limenitis weidemeyerii

2,303 observations

Police Car Moth

Gnophaela vermiculata

2,249 observations · iNaturalist

2,187 observations

Common Checkered-Skipper

Burnsius communis

2,167 observations · iNaturalist

Four-spotted Moth

2,055 observations · iNaturalist

Brown-belted Bumble Bee

Bombus griseocollis

1,922 observations

Blue Fungus Beetle

Cypherotylus californicus

1,920 observations · iNaturalist

Variegated Fritillary

Euptoieta claudia

1,865 observations

Western Black Widow

Latrodectus hesperus

1,836 observations · iNaturalist

Eastern Boxelder Bug

Boisea trivittata

1,786 observations

Rocky Mountain Parnassian

Parnassius smintheus

1,759 observations · iNaturalist

Nymphalis antiopa

1,713 observations

Western Conifer Seed Bug

Leptoglossus occidentalis

1,701 observations · iNaturalist

Band-winged Meadowhawk

Sympetrum semicinctum

1,675 observations · iNaturalist

Nevada Bumble Bee

Bombus nevadensis

1,630 observations

Golden Northern Bumble Bee

Bombus fervidus

1,584 observations

Libellula luctuosa

1,577 observations

Western Tiger Swallowtail

Papilio rutulus

1,523 observations

Variegated Meadowhawk

Sympetrum corruptum

1,518 observations · iNaturalist

Small Milkweed Bug

1,513 observations

Colorado Soldier Beetle

Chauliognathus basalis

1,496 observations · iNaturalist

Apache Jumping Spider

Phidippus apacheanus

1,462 observations · iNaturalist

Taxiles Skipper

1,462 observations · iNaturalist

American Bumble Bee

Bombus pensylvanicus

1,420 observations

Checkered White

Pontia protodice

1,403 observations · iNaturalist

Polygonia gracilis

1,354 observations

Differential Grasshopper

Melanoplus differentialis

1,287 observations

Red-femured Milkweed Borer

Tetraopes femoratus

1,248 observations · iNaturalist

Greater Anglewing

Microcentrum rhombifolium

1,191 observations · iNaturalist

Spotted Tussock Moth

Lophocampa maculata

1,189 observations

White-spotted Sawyer

Monochamus scutellatus

1,182 observations

Vanessa atalanta

1,172 observations

Ornate Checkered Beetle

Trichodes ornatus

1,160 observations

Jagged Ambush Bug

Phymata americana

1,157 observations

European Harvestman

Phalangium opilio

1,109 observations · iNaturalist

Zebra Jumping Spider

Salticus scenicus

1,104 observations · iNaturalist

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