Insects & Arthropods of Colorado
The insects & arthropods most often spotted in Colorado, ranked by recent research-grade observations.
Most-observed insects & arthropods in Colorado
Western Honey Bee
Apis mellifera
6,566 observations
Bold Jumping Spider
Phidippus audax
4,702 observations
Convergent Lady Beetle
Hippodamia convergens
3,783 observations
White-lined Sphinx
Hyles lineata
3,714 observations · iNaturalist
Seven-spotted Lady Beetle
Coccinella septempunctata
3,639 observations
Hunt's Bumble Bee
Bombus huntii
3,585 observations · iNaturalist
Painted Lady
Vanessa cardui
3,424 observations
Asian Lady Beetle
Harmonia axyridis
2,671 observations
European Paper Wasp
Polistes dominula
2,649 observations
Two-striped Grasshopper
Melanoplus bivittatus
2,626 observations · iNaturalist
Two-tailed Swallowtail
Papilio multicaudata
2,538 observations · iNaturalist
Monarch
Danaus plexippus
2,405 observations
European Mantis
Mantis religiosa
2,308 observations
Japanese Beetle
Popillia japonica
2,208 observations
Small White
Pieris rapae
2,143 observations
Weidemeyer's Admiral
Limenitis weidemeyerii
2,134 observations
Police Car Moth
Gnophaela vermiculata
2,108 observations · iNaturalist
Four-spotted Moth
Tyta luctuosa
1,931 observations · iNaturalist
Brown-belted Bumble Bee
Bombus griseocollis
1,890 observations
Blue Fungus Beetle
Cypherotylus californicus
1,859 observations · iNaturalist
Variegated Fritillary
Euptoieta claudia
1,793 observations
Common Checkered-Skipper
Burnsius communis
1,723 observations · iNaturalist
Eastern Boxelder Bug
Boisea trivittata
1,720 observations
Mourning Cloak
Nymphalis antiopa
1,676 observations
Western Conifer Seed Bug
Leptoglossus occidentalis
1,666 observations · iNaturalist
Nevada Bumble Bee
Bombus nevadensis
1,606 observations
Band-winged Meadowhawk
Sympetrum semicinctum
1,596 observations · iNaturalist
Rocky Mountain Parnassian
Parnassius smintheus
1,582 observations · iNaturalist
Western Black Widow
Latrodectus hesperus
1,566 observations · iNaturalist
Colorado Soldier Beetle
Chauliognathus basalis
1,485 observations · iNaturalist
Widow Skimmer
Libellula luctuosa
1,449 observations
Western Tiger Swallowtail
Papilio rutulus
1,442 observations
Small Milkweed Bug
Lygaeus kalmii
1,424 observations
Golden Northern Bumble Bee
Bombus fervidus
1,419 observations
American Bumble Bee
Bombus pensylvanicus
1,391 observations
Variegated Meadowhawk
Sympetrum corruptum
1,369 observations · iNaturalist
Checkered White
Pontia protodice
1,365 observations · iNaturalist
Taxiles Skipper
Lon taxiles
1,363 observations · iNaturalist
Hoary Comma
Polygonia gracilis
1,327 observations
Apache Jumping Spider
Phidippus apacheanus
1,295 observations · iNaturalist
Differential Grasshopper
Melanoplus differentialis
1,237 observations
Greater Anglewing
Microcentrum rhombifolium
1,172 observations · iNaturalist
Spotted Tussock Moth
Lophocampa maculata
1,163 observations
Red Admiral
Vanessa atalanta
1,135 observations
White-spotted Sawyer
Monochamus scutellatus
1,134 observations
Ornate Checkered Beetle
Trichodes ornatus
1,111 observations
European Harvestman
Phalangium opilio
1,093 observations · iNaturalist
Jagged Ambush Bug
Phymata americana
1,080 observations
Zebra Jumping Spider
Salticus scenicus
1,050 observations · iNaturalist
Western Yellowjacket
Vespula pensylvanica
1,035 observations · iNaturalist