Insects & Arthropods of Washington

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

197,489

recent observations

50

species listed

50

insects & arthropods

Naturalists have logged 197,489 research-grade observations across the 50 most-recorded species in Washington. The most frequently seen is the Cross Orbweaver, with 13,985 recorded sightings.

Most-observed insects & arthropods in Washington

Cross Orbweaver

Araneus diadematus

13,985 observations

Western Honey Bee

11,703 observations

Asian Lady Beetle

Harmonia axyridis

8,872 observations

Black-tailed Bumble Bee

Bombus melanopygus

6,391 observations · iNaturalist

Yellow-faced Bumble Bee

Bombus vosnesenskii

6,204 observations · iNaturalist

Woodland Skipper

Ochlodes sylvanoides

5,606 observations · iNaturalist

Fuzzy-Horned Bumble Bee

5,571 observations · iNaturalist

Seven-spotted Lady Beetle

Coccinella septempunctata

5,411 observations

European Paper Wasp

Polistes dominula

5,259 observations

Lorquin's Admiral

Limenitis lorquini

5,116 observations

Giant House Spider

Eratigena duellica

5,097 observations · iNaturalist

Isabella Tiger Moth

Pyrrharctia isabella

5,068 observations

Zebra Jumping Spider

Salticus scenicus

5,000 observations · iNaturalist

Goldenrod Crab Spider

4,960 observations

Western Tiger Swallowtail

Papilio rutulus

4,742 observations

Silver-spotted Tiger Moth

Lophocampa argentata

4,669 observations · iNaturalist

Western Conifer Seed Bug

Leptoglossus occidentalis

4,666 observations · iNaturalist

European Mantis

Mantis religiosa

4,529 observations

Brown Marmorated Stink Bug

Halyomorpha halys

4,111 observations

4,106 observations

Large Yellow Underwing

3,889 observations

Pacific Forktail

Ischnura cervula

3,412 observations · iNaturalist

Eight-spotted Skimmer

Libellula forensis

3,210 observations

Western Tent Caterpillar Moth

Malacosoma californica

3,184 observations · iNaturalist

Bold Jumping Spider

Phidippus audax

3,099 observations

Yellow-fronted Bumble Bee

Bombus flavifrons

3,089 observations · iNaturalist

Western Boxelder Bug

Boisea rubrolineata

3,042 observations · iNaturalist

Celastrina echo

2,930 observations · iNaturalist

Vancouver Bumble Bee

Bombus vancouverensis

2,803 observations · iNaturalist

Western Polished Lady Beetle

Cycloneda polita

2,781 observations · iNaturalist

Tyria jacobaeae

2,752 observations · iNaturalist

Spotted Tussock Moth

Lophocampa maculata

2,645 observations

Bald-faced Hornet

Dolichovespula maculata

2,570 observations

Narrow-collared Snail-eating Beetle

Scaphinotus angusticollis

2,534 observations · iNaturalist

Pachydiplax longipennis

2,521 observations

California Tortoiseshell

Nymphalis californica

2,510 observations

Common Red Soldier Beetle

Rhagonycha fulva

2,477 observations · iNaturalist

Pale Swallowtail

Papilio eurymedon

2,473 observations

Great Golden Digger Wasp

Sphex ichneumoneus

2,396 observations · iNaturalist

2,324 observations

Forficula dentata

2,205 observations · iNaturalist

Bronze Ground Beetle

Carabus nemoralis

2,200 observations · iNaturalist

Western Yellowjacket

Vespula pensylvanica

2,134 observations · iNaturalist

Virginian Tiger Moth

Spilosoma virginica

2,089 observations

Orange-legged Furrow Bee

Halictus rubicundus

2,084 observations

Brown-lined Looper

Neoalcis californiaria

1,907 observations · iNaturalist

California Bumble Bee

Bombus californicus

1,897 observations · iNaturalist

Triphosa haesitata

1,801 observations · iNaturalist

Convergent Lady Beetle

Hippodamia convergens

1,733 observations

Madrone Skin Miner

Marmara arbutiella

1,732 observations · iNaturalist

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