Insects & Arthropods of Washington

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

200,271

recent observations

50

species listed

50

insects & arthropods

Naturalists have logged 200,271 research-grade observations across the 50 most-recorded species in Washington. The most frequently seen is the Cross Orbweaver, with 14,170 recorded sightings.

Most-observed insects & arthropods in Washington

Cross Orbweaver

Araneus diadematus

14,170 observations

Western Honey Bee

11,947 observations

Asian Lady Beetle

Harmonia axyridis

8,966 observations

Black-tailed Bumble Bee

Bombus melanopygus

6,430 observations · iNaturalist

Yellow-faced Bumble Bee

Bombus vosnesenskii

6,315 observations · iNaturalist

Woodland Skipper

Ochlodes sylvanoides

6,000 observations · iNaturalist

Fuzzy-Horned Bumble Bee

5,580 observations · iNaturalist

Seven-spotted Lady Beetle

Coccinella septempunctata

5,448 observations

European Paper Wasp

Polistes dominula

5,320 observations

Lorquin's Admiral

Limenitis lorquini

5,182 observations

Giant House Spider

Eratigena duellica

5,154 observations · iNaturalist

Isabella Tiger Moth

Pyrrharctia isabella

5,084 observations

Zebra Jumping Spider

Salticus scenicus

5,047 observations · iNaturalist

Goldenrod Crab Spider

5,015 observations

Western Tiger Swallowtail

Papilio rutulus

4,787 observations

Silver-spotted Tiger Moth

Lophocampa argentata

4,745 observations · iNaturalist

European Mantis

Mantis religiosa

4,725 observations

Western Conifer Seed Bug

Leptoglossus occidentalis

4,696 observations · iNaturalist

4,198 observations

Brown Marmorated Stink Bug

Halyomorpha halys

4,145 observations

Large Yellow Underwing

3,916 observations

Pacific Forktail

Ischnura cervula

3,425 observations · iNaturalist

Eight-spotted Skimmer

Libellula forensis

3,243 observations

Western Tent Caterpillar Moth

Malacosoma californica

3,188 observations · iNaturalist

Bold Jumping Spider

Phidippus audax

3,143 observations

Yellow-fronted Bumble Bee

Bombus flavifrons

3,102 observations · iNaturalist

Western Boxelder Bug

Boisea rubrolineata

3,095 observations · iNaturalist

Celastrina echo

2,950 observations · iNaturalist

Vancouver Bumble Bee

Bombus vancouverensis

2,831 observations · iNaturalist

Western Polished Lady Beetle

Cycloneda polita

2,803 observations · iNaturalist

Spotted Tussock Moth

Lophocampa maculata

2,793 observations

Tyria jacobaeae

2,763 observations · iNaturalist

Bald-faced Hornet

Dolichovespula maculata

2,629 observations

Pachydiplax longipennis

2,559 observations

Narrow-collared Snail-eating Beetle

Scaphinotus angusticollis

2,542 observations · iNaturalist

California Tortoiseshell

Nymphalis californica

2,531 observations

Common Red Soldier Beetle

Rhagonycha fulva

2,483 observations · iNaturalist

Pale Swallowtail

Papilio eurymedon

2,477 observations

Great Golden Digger Wasp

Sphex ichneumoneus

2,465 observations · iNaturalist

2,357 observations

Forficula dentata

2,238 observations · iNaturalist

Bronze Ground Beetle

Carabus nemoralis

2,225 observations · iNaturalist

Western Yellowjacket

Vespula pensylvanica

2,153 observations · iNaturalist

Orange-legged Furrow Bee

Halictus rubicundus

2,148 observations

Virginian Tiger Moth

Spilosoma virginica

2,108 observations

Brown-lined Looper

Neoalcis californiaria

1,928 observations · iNaturalist

California Bumble Bee

Bombus californicus

1,907 observations · iNaturalist

Triphosa haesitata

1,814 observations · iNaturalist

Common Drone Fly

Eristalis tenax

1,756 observations

Convergent Lady Beetle

Hippodamia convergens

1,745 observations

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