Insects & Arthropods of Illinois
The insects & arthropods most often spotted in Illinois, ranked by recent research-grade observations.
322,917
recent observations
50
species listed
50
insects & arthropods
Naturalists have logged 322,917 research-grade observations across the 50 most-recorded species in Illinois. The most frequently seen is the Common Eastern Bumble Bee, with 26,016 recorded sightings.
Most-observed insects & arthropods in Illinois
Common Eastern Bumble Bee
Bombus impatiens
26,016 observations
Monarch
Danaus plexippus
23,491 observations
Brown-belted Bumble Bee
Bombus griseocollis
19,838 observations
Western Honey Bee
Apis mellifera
16,697 observations
Black Swallowtail
Papilio polyxenes
10,464 observations
Eastern Carpenter Bee
Xylocopa virginica
10,425 observations
Asian Lady Beetle
Harmonia axyridis
10,032 observations
Two-spotted Bumble Bee
Bombus bimaculatus
9,417 observations
Eastern Tiger Swallowtail
Papilio glaucus
8,939 observations
Red Admiral
Vanessa atalanta
8,126 observations
Silver-spotted Skipper
Epargyreus clarus
8,034 observations
Pearl Crescent
Phyciodes tharos
7,678 observations
Common Buckeye
Junonia coenia
7,244 observations
Large Milkweed Bug
Oncopeltus fasciatus
6,638 observations
Small White
Pieris rapae
6,364 observations
Red-spotted Admiral
Limenitis arthemis
5,661 observations
Ligated Furrow Bee
Halictus ligatus
5,480 observations · iNaturalist
Eastern Tailed-Blue
Everes comyntas
5,416 observations
Painted Lady
Vanessa cardui
5,254 observations
Common Whitetail
Plathemis lydia
5,081 observations
Bold Jumping Spider
Phidippus audax
4,931 observations
Ailanthus Webworm Moth
Atteva aurea
4,710 observations · iNaturalist
Fiery Skipper
Hylephila phyleus
4,628 observations · iNaturalist
Black-and-gold Bumble Bee
Bombus auricomus
4,563 observations
Red Milkweed Beetle
Tetraopes tetrophthalmus
4,551 observations
Japanese Beetle
Popillia japonica
4,535 observations
Goldenrod Soldier Beetle
Chauliognathus pensylvanicus
4,528 observations · iNaturalist
Blue Dasher
Pachydiplax longipennis
4,481 observations
Eastern Pondhawk
Erythemis simplicicollis
4,293 observations
Widow Skimmer
Libellula luctuosa
4,290 observations
Hackberry Emperor
Asterocampa celtis
4,278 observations
Pipevine Swallowtail
Battus philenor
4,175 observations
Carolina Mantis
Stagmomantis carolina
4,119 observations
Spicebush Swallowtail
Papilio troilus
3,798 observations
Margined Calligrapher
Toxomerus marginatus
3,773 observations · iNaturalist
Orange Sulphur
Colias eurytheme
3,620 observations
Eastern Forktail
Ischnura verticalis
3,617 observations
Isabella Tiger Moth
Pyrrharctia isabella
3,594 observations
Six-spotted Tiger Beetle
Cicindela sexguttata
3,587 observations
Differential Grasshopper
Melanoplus differentialis
3,507 observations
Chinese Mantis
Tenodera sinensis
3,470 observations
Northern Paper Wasp
Polistes fuscatus
3,450 observations
Bald-faced Hornet
Dolichovespula maculata
3,381 observations
Peck's Skipper
Polites peckius
3,342 observations · iNaturalist
Question Mark
Polygonia interrogationis
3,337 observations
Brown Marmorated Stink Bug
Halyomorpha halys
3,337 observations
Green Cloverworm Moth
Hypena scabra
3,300 observations · iNaturalist
Spotted Cucumber Beetle
Diabrotica undecimpunctata
3,258 observations
North American Wheel Bug
Arilus cristatus
3,088 observations
Zabulon Skipper
Lon zabulon
3,081 observations · iNaturalist
Insects & Arthropods in nearby places
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