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Insects & Arthropods of Washington

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

209,871
recent observations
50
species listed
50
insects & arthropods

Naturalists have logged 209,871 research-grade observations across the 50 most-recorded species in Washington. The most frequently seen is the Cross Orbweaver, with 15,683 recorded sightings.

Most-observed insects & arthropods in Washington

Cross Orbweaver
Araneus diadematus
15,683 observations
Western Honey Bee
Apis mellifera
12,467 observations
Asian Lady Beetle
Harmonia axyridis
9,357 observations
Black-tailed Bumble Bee
Bombus melanopygus
6,531 observations · iNaturalist
Yellow-faced Bumble Bee
Bombus vosnesenskii
6,433 observations · iNaturalist
Woodland Skipper
Ochlodes sylvanoides
6,224 observations · iNaturalist
Isabella Tiger Moth
Pyrrharctia isabella
5,665 observations
Fuzzy-Horned Bumble Bee
Bombus mixtus
5,623 observations · iNaturalist
European Mantis
Mantis religiosa
5,581 observations
Seven-spotted Lady Beetle
Coccinella septempunctata
5,566 observations
European Paper Wasp
Polistes dominula
5,530 observations
Giant House Spider
Eratigena duellica
5,355 observations · iNaturalist
Western Conifer Seed Bug
Leptoglossus occidentalis
5,342 observations · iNaturalist
Lorquin's Admiral
Limenitis lorquini
5,304 observations
Zebra Jumping Spider
Salticus scenicus
5,209 observations · iNaturalist
Goldenrod Crab Spider
Misumena vatia
5,051 observations
Western Tiger Swallowtail
Papilio rutulus
4,838 observations
Silver-spotted Tiger Moth
Lophocampa argentata
4,764 observations · iNaturalist
Brown Marmorated Stink Bug
Halyomorpha halys
4,505 observations
Small White
Pieris rapae
4,347 observations
Large Yellow Underwing
Noctua pronuba
4,026 observations
Pacific Forktail
Ischnura cervula
3,471 observations · iNaturalist
Spotted Tussock Moth
Lophocampa maculata
3,466 observations
Bold Jumping Spider
Phidippus audax
3,344 observations
Eight-spotted Skimmer
Libellula forensis
3,274 observations
Western Tent Caterpillar Moth
Malacosoma californica
3,217 observations · iNaturalist
Western Boxelder Bug
Boisea rubrolineata
3,146 observations · iNaturalist
Yellow-fronted Bumble Bee
Bombus flavifrons
3,128 observations · iNaturalist
Echo Azure
Celastrina echo
2,960 observations · iNaturalist
Vancouver Bumble Bee
Bombus vancouverensis
2,862 observations · iNaturalist
Western Polished Lady Beetle
Cycloneda polita
2,837 observations · iNaturalist
Cinnabar Moth
Tyria jacobaeae
2,778 observations · iNaturalist
Bald-faced Hornet
Dolichovespula maculata
2,729 observations
Narrow-collared Snail-eating Beetle
Scaphinotus angusticollis
2,711 observations · iNaturalist
California Tortoiseshell
Nymphalis californica
2,710 observations
Blue Dasher
Pachydiplax longipennis
2,611 observations
Great Golden Digger Wasp
Sphex ichneumoneus
2,591 observations · iNaturalist
Common Red Soldier Beetle
Rhagonycha fulva
2,541 observations · iNaturalist
Pale Swallowtail
Papilio eurymedon
2,488 observations
Painted Lady
Vanessa cardui
2,426 observations
Western Earwig
Forficula dentata
2,344 observations · iNaturalist
Orange-legged Furrow Bee
Halictus rubicundus
2,318 observations
Bronze Ground Beetle
Carabus nemoralis
2,299 observations · iNaturalist
Western Yellowjacket
Vespula pensylvanica
2,258 observations · iNaturalist
Brown-lined Looper
Neoalcis californiaria
2,184 observations · iNaturalist
Virginian Tiger Moth
Spilosoma virginica
2,178 observations
Common Drone Fly
Eristalis tenax
1,962 observations
California Bumble Bee
Bombus californicus
1,941 observations · iNaturalist
Tissue Moth
Triphosa haesitata
1,899 observations · iNaturalist
Convergent Lady Beetle
Hippodamia convergens
1,797 observations

Built from recent research-grade iNaturalist observations. Identifications are community-sourced and may occasionally be wrong, and the ranking reflects where people record and photograph wildlife, so a species seen often here is not necessarily rare elsewhere. Some plants and animals are only out in certain seasons. Treat this as a lively snapshot of what people are finding, not a formal checklist.

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