Insects & Arthropods of Denver, Colorado
The insects & arthropods most often spotted near Denver, ranked by recent research-grade observations.
Most-observed insects & arthropods near Denver
Western Honey Bee
Apis mellifera
3,355 observations
Bold Jumping Spider
Phidippus audax
2,334 observations
Seven-spotted Lady Beetle
Coccinella septempunctata
1,696 observations
Painted Lady
Vanessa cardui
1,580 observations
Japanese Beetle
Popillia japonica
1,576 observations
Hunt's Bumble Bee
Bombus huntii
1,476 observations · iNaturalist
European Paper Wasp
Polistes dominula
1,307 observations
Monarch
Danaus plexippus
1,251 observations
Two-striped Grasshopper
Melanoplus bivittatus
1,239 observations · iNaturalist
Two-tailed Swallowtail
Papilio multicaudata
1,175 observations · iNaturalist
Convergent Lady Beetle
Hippodamia convergens
1,165 observations
Four-spotted Moth
Tyta luctuosa
1,115 observations · iNaturalist
Small White
Pieris rapae
1,077 observations
Golden Northern Bumble Bee
Bombus fervidus
1,057 observations
Asian Lady Beetle
Harmonia axyridis
1,053 observations
White-lined Sphinx
Hyles lineata
1,031 observations · iNaturalist
Brown-belted Bumble Bee
Bombus griseocollis
1,007 observations
European Mantis
Mantis religiosa
873 observations
Eastern Boxelder Bug
Boisea trivittata
849 observations
Common Checkered-Skipper
Burnsius communis
798 observations · iNaturalist
Western Black Widow
Latrodectus hesperus
763 observations · iNaturalist
Great Spreadwing
Archilestes grandis
708 observations · iNaturalist
Taxiles Skipper
Lon taxiles
693 observations · iNaturalist
Western Conifer Seed Bug
Leptoglossus occidentalis
673 observations · iNaturalist
Widow Skimmer
Libellula luctuosa
667 observations
Colorado Soldier Beetle
Chauliognathus basalis
655 observations · iNaturalist
Greater Anglewing
Microcentrum rhombifolium
643 observations · iNaturalist
Variegated Fritillary
Euptoieta claudia
642 observations
Variegated Meadowhawk
Sympetrum corruptum
621 observations · iNaturalist
Band-winged Meadowhawk
Sympetrum semicinctum
616 observations · iNaturalist
Small Milkweed Bug
Lygaeus kalmii
601 observations
Nevada Bumble Bee
Bombus nevadensis
583 observations
Jagged Ambush Bug
Phymata americana
557 observations
Differential Grasshopper
Melanoplus differentialis
549 observations
Gray Hairstreak
Strymon melinus
545 observations
Red-femured Milkweed Borer
Tetraopes femoratus
543 observations · iNaturalist
Apache Jumping Spider
Phidippus apacheanus
528 observations · iNaturalist
Woodlouse Spider
Dysdera crocata
527 observations
Red-backed Darkling Beetle
Eleodes suturalis
522 observations · iNaturalist
Common Whitetail
Plathemis lydia
514 observations
Checkered White
Pontia protodice
512 observations · iNaturalist
Blue Fungus Beetle
Cypherotylus californicus
507 observations · iNaturalist
American Bumble Bee
Bombus pensylvanicus
478 observations
European Harvestman
Phalangium opilio
466 observations · iNaturalist
Twelve-spotted Skimmer
Libellula pulchella
454 observations
Red Admiral
Vanessa atalanta
438 observations
Sutured Longhorn Beetle
Batyle suturalis
433 observations · iNaturalist
Western Yellowjacket
Vespula pensylvanica
430 observations · iNaturalist
Orange Sulphur
Colias eurytheme
407 observations
Margined Calligrapher
Toxomerus marginatus
400 observations · iNaturalist