Insects & Arthropods of Illinois
The insects & arthropods most often spotted in Illinois, ranked by recent research-grade observations.
304,336
recent observations
50
species listed
50
insects & arthropods
Naturalists have logged 304,336 research-grade observations across the 50 most-recorded species in Illinois. The most frequently seen is the Common Eastern Bumble Bee, with 24,138 recorded sightings.
Most-observed insects & arthropods in Illinois
Common Eastern Bumble Bee
Bombus impatiens
24,138 observations
Monarch
Danaus plexippus
20,938 observations
Brown-belted Bumble Bee
Bombus griseocollis
19,414 observations
Western Honey Bee
Apis mellifera
16,102 observations
Eastern Carpenter Bee
Xylocopa virginica
9,860 observations
Black Swallowtail
Papilio polyxenes
9,707 observations
Asian Lady Beetle
Harmonia axyridis
9,693 observations
Two-spotted Bumble Bee
Bombus bimaculatus
9,339 observations
Eastern Tiger Swallowtail
Papilio glaucus
8,535 observations
Red Admiral
Vanessa atalanta
7,929 observations
Pearl Crescent
Phyciodes tharos
7,453 observations
Silver-spotted Skipper
Epargyreus clarus
7,392 observations
Common Buckeye
Junonia coenia
6,594 observations
Large Milkweed Bug
Oncopeltus fasciatus
6,144 observations
Small White
Pieris rapae
6,029 observations
Ligated Furrow Bee
Halictus ligatus
5,439 observations · iNaturalist
Red-spotted Admiral
Limenitis arthemis
5,236 observations
Eastern Tailed-Blue
Everes comyntas
5,030 observations
Common Whitetail
Plathemis lydia
4,943 observations
Bold Jumping Spider
Phidippus audax
4,568 observations
Red Milkweed Beetle
Tetraopes tetrophthalmus
4,481 observations
Painted Lady
Vanessa cardui
4,466 observations
Black-and-gold Bumble Bee
Bombus auricomus
4,449 observations
Fiery Skipper
Hylephila phyleus
4,362 observations · iNaturalist
Japanese Beetle
Popillia japonica
4,353 observations
Blue Dasher
Pachydiplax longipennis
4,324 observations
Ailanthus Webworm Moth
Atteva aurea
4,250 observations · iNaturalist
Widow Skimmer
Libellula luctuosa
4,150 observations
Eastern Pondhawk
Erythemis simplicicollis
4,066 observations
Hackberry Emperor
Asterocampa celtis
3,982 observations
Pipevine Swallowtail
Battus philenor
3,933 observations
Goldenrod Soldier Beetle
Chauliognathus pensylvanicus
3,743 observations · iNaturalist
Spicebush Swallowtail
Papilio troilus
3,662 observations
Six-spotted Tiger Beetle
Cicindela sexguttata
3,574 observations
Margined Calligrapher
Toxomerus marginatus
3,555 observations · iNaturalist
Eastern Forktail
Ischnura verticalis
3,544 observations
Isabella Tiger Moth
Pyrrharctia isabella
3,492 observations
Orange Sulphur
Colias eurytheme
3,440 observations
Carolina Mantis
Stagmomantis carolina
3,386 observations
Differential Grasshopper
Melanoplus differentialis
3,345 observations
Brown Marmorated Stink Bug
Halyomorpha halys
3,294 observations
Question Mark
Polygonia interrogationis
3,258 observations
Chinese Mantis
Tenodera sinensis
3,244 observations
Northern Paper Wasp
Polistes fuscatus
3,243 observations
Bald-faced Hornet
Dolichovespula maculata
3,210 observations
Green Cloverworm Moth
Hypena scabra
3,166 observations · iNaturalist
Peck's Skipper
Polites peckius
3,101 observations · iNaturalist
Zabulon Skipper
Lon zabulon
3,049 observations · iNaturalist
North American Wheel Bug
Arilus cristatus
2,963 observations
Two-spotted Longhorn Bee
Melissodes bimaculatus
2,768 observations
Insects & Arthropods in nearby places
Out spotting insects & arthropods in Illinois?
Take Huck with you. Identify any insects & arthropod you find in seconds and build your collection.
Get HuckLove insects & arthropods? Get Huck field notes
Spotting tips, new species, and the best of what people are finding in the wild - straight to your inbox.