Insects & Arthropods of Washington
The insects & arthropods most often spotted in Washington, ranked by recent research-grade observations.
Most-observed insects & arthropods in Washington
Cross Orbweaver
Araneus diadematus
13,451 observations
Western Honey Bee
Apis mellifera
10,841 observations
Asian Lady Beetle
Harmonia axyridis
8,533 observations
Black-tailed Bumble Bee
Bombus melanopygus
6,351 observations · iNaturalist
Yellow-faced Bumble Bee
Bombus vosnesenskii
5,715 observations · iNaturalist
Fuzzy-Horned Bumble Bee
Bombus mixtus
5,527 observations · iNaturalist
Seven-spotted Lady Beetle
Coccinella septempunctata
5,171 observations
Woodland Skipper
Ochlodes sylvanoides
5,169 observations · iNaturalist
European Paper Wasp
Polistes dominula
5,064 observations
Giant House Spider
Eratigena duellica
5,047 observations · iNaturalist
Isabella Tiger Moth
Pyrrharctia isabella
5,013 observations
Zebra Jumping Spider
Salticus scenicus
4,808 observations · iNaturalist
Lorquin's Admiral
Limenitis lorquini
4,658 observations
Goldenrod Crab Spider
Misumena vatia
4,645 observations
Western Conifer Seed Bug
Leptoglossus occidentalis
4,608 observations · iNaturalist
Silver-spotted Tiger Moth
Lophocampa argentata
4,393 observations · iNaturalist
Western Tiger Swallowtail
Papilio rutulus
4,280 observations
European Mantis
Mantis religiosa
4,224 observations
Brown Marmorated Stink Bug
Halyomorpha halys
4,005 observations
Small White
Pieris rapae
3,847 observations
Large Yellow Underwing
Noctua pronuba
3,443 observations
Pacific Forktail
Ischnura cervula
3,353 observations · iNaturalist
Western Tent Caterpillar Moth
Malacosoma californica
3,164 observations · iNaturalist
Yellow-fronted Bumble Bee
Bombus flavifrons
3,039 observations · iNaturalist
Bold Jumping Spider
Phidippus audax
3,007 observations
Eight-spotted Skimmer
Libellula forensis
2,982 observations
Western Boxelder Bug
Boisea rubrolineata
2,917 observations · iNaturalist
Echo Azure
Celastrina echo
2,795 observations · iNaturalist
Vancouver Bumble Bee
Bombus vancouverensis
2,665 observations · iNaturalist
Western Polished Lady Beetle
Cycloneda polita
2,621 observations · iNaturalist
Cinnabar moth
Tyria jacobaeae
2,561 observations · iNaturalist
Narrow-collared Snail-eating Beetle
Scaphinotus angusticollis
2,507 observations · iNaturalist
Spotted Tussock Moth
Lophocampa maculata
2,506 observations
Bald-faced Hornet
Dolichovespula maculata
2,472 observations
Pale Swallowtail
Papilio eurymedon
2,348 observations
Blue Dasher
Pachydiplax longipennis
2,326 observations
Great Golden Digger Wasp
Sphex ichneumoneus
2,267 observations · iNaturalist
California Tortoiseshell
Nymphalis californica
2,211 observations
Western Yellowjacket
Vespula pensylvanica
2,101 observations · iNaturalist
Bronze Ground Beetle
Carabus nemoralis
2,053 observations · iNaturalist
Western Earwig
Forficula dentata
2,035 observations · iNaturalist
Virginian Tiger Moth
Spilosoma virginica
2,029 observations
Painted Lady
Vanessa cardui
2,023 observations
Common Red Soldier Beetle
Rhagonycha fulva
1,976 observations · iNaturalist
Orange-legged Furrow Bee
Halictus rubicundus
1,963 observations
California Bumble Bee
Bombus californicus
1,836 observations · iNaturalist
Brown-lined Looper
Neoalcis californiaria
1,791 observations · iNaturalist
Tissue Moth
Triphosa haesitata
1,765 observations · iNaturalist
Madrone Skin Miner
Marmara arbutiella
1,694 observations · iNaturalist
Convergent Lady Beetle
Hippodamia convergens
1,634 observations