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Monarch
Danaus plexippus
16,641 observations
Common Eastern Bumble Bee
Bombus impatiens
16,303 observations
Brown-belted Bumble Bee
Bombus griseocollis
10,416 observations
Western Honey Bee
Apis mellifera
8,445 observations
Black Swallowtail
Papilio polyxenes
8,211 observations
Asian Lady Beetle
Harmonia axyridis
7,208 observations
Two-spotted Bumble Bee
Bombus bimaculatus
6,995 observations
Red Admiral
Vanessa atalanta
6,801 observations
Pearl Crescent
Phyciodes tharos
6,092 observations
Eastern Tiger Swallowtail
Papilio glaucus
6,040 observations
Silver-spotted Skipper
Epargyreus clarus
5,607 observations
Small White
Pieris rapae
5,085 observations
Common Buckeye
Junonia coenia
4,972 observations
Large Milkweed Bug
Oncopeltus fasciatus
4,972 observations
Eastern Carpenter Bee
Xylocopa virginica
4,478 observations
Common Whitetail
Plathemis lydia
3,979 observations
Red Milkweed Beetle
Tetraopes tetrophthalmus
3,933 observations
Eastern Tailed-Blue
Cupido comyntas
3,883 observations
Red-spotted Admiral
Limenitis arthemis
3,878 observations
Widow Skimmer
Libellula luctuosa
3,500 observations
Painted Lady
Vanessa cardui
3,447 observations
Eastern Forktail
Ischnura verticalis
3,378 observations
Japanese Beetle
Popillia japonica
3,374 observations
Eastern Pondhawk
Erythemis simplicicollis
3,315 observations
Blue Dasher
Pachydiplax longipennis
3,269 observations
Fiery Skipper
Hylephila phyleus
3,202 observations
Ailanthus Webworm Moth
Atteva aurea
3,187 observations
Black-and-gold Bumble Bee
Bombus auricomus
3,067 observations
Goldenrod Soldier Beetle
Chauliognathus pensylvanicus
2,997 observations
Northern Paper Wasp
Polistes fuscatus
2,955 observations
Orange Sulphur
Colias eurytheme
2,946 observations
Isabella Tiger Moth
Pyrrharctia isabella
2,820 observations
Bald-faced Hornet
Dolichovespula maculata
2,797 observations
Six-spotted Tiger Beetle
Cicindela sexguttata
2,788 observations
Peck's Skipper
Polites peckius
2,744 observations
Hackberry Emperor
Asterocampa celtis
2,725 observations
Question Mark
Polygonia interrogationis
2,689 observations
Differential Grasshopper
Melanoplus differentialis
2,618 observations
Chinese Mantis
Tenodera sinensis
2,601 observations
Margined Calligrapher
Toxomerus marginatus
2,586 observations
Green Cloverworm Moth
Hypena scabra
2,502 observations
Zabulon Skipper
Lon zabulon
2,434 observations
Brown Marmorated Stink Bug
Halyomorpha halys
2,424 observations
Golden Northern Bumble Bee
Bombus fervidus
2,264 observations
North American Wheel Bug
Arilus cristatus
2,184 observations
Pipevine Swallowtail
Battus philenor
2,166 observations
Spicebush Swallowtail
Papilio troilus
2,133 observations
Carolina Mantis
Stagmomantis carolina
2,129 observations
Viceroy
Limenitis archippus
2,121 observations
Virginian Tiger Moth
Spilosoma virginica
2,113 observations
Frequently Asked Questions
- The 10 most common insects in Illinois are:
- Monarch (Danaus plexippus)
- Common Eastern Bumble Bee (Bombus impatiens)
- Brown-belted Bumble Bee (Bombus griseocollis)
- Western Honey Bee (Apis mellifera)
- Black Swallowtail (Papilio polyxenes)
- Asian Lady Beetle (Harmonia axyridis)
- Two-spotted Bumble Bee (Bombus bimaculatus)
- Red Admiral (Vanessa atalanta)
- Pearl Crescent (Phyciodes tharos)
- Eastern Tiger Swallowtail (Papilio glaucus)
- The most observed insect in Illinois is Monarch (Danaus plexippus), with 16,641 recorded observations.