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Monarch
Danaus plexippus
19,656 observations
Common Eastern Bumble Bee
Bombus impatiens
19,140 observations
Brown-belted Bumble Bee
Bombus griseocollis
11,395 observations
Western Honey Bee
Apis mellifera
9,370 observations
Black Swallowtail
Papilio polyxenes
9,137 observations
Asian Lady Beetle
Harmonia axyridis
7,794 observations
Two-spotted Bumble Bee
Bombus bimaculatus
7,266 observations
Red Admiral
Vanessa atalanta
7,078 observations
Eastern Tiger Swallowtail
Papilio glaucus
6,550 observations
Pearl Crescent
Phyciodes tharos
6,333 observations
Silver-spotted Skipper
Epargyreus clarus
6,325 observations
Large Milkweed Bug
Oncopeltus fasciatus
6,196 observations
Common Buckeye
Junonia coenia
5,795 observations
Small White
Pieris rapae
5,500 observations
Eastern Carpenter Bee
Xylocopa virginica
5,167 observations
Red-spotted Admiral
Limenitis arthemis
4,373 observations
Painted Lady
Vanessa cardui
4,347 observations
Eastern Tailed-Blue
Everes comyntas
4,149 observations
Common Whitetail
Plathemis lydia
4,148 observations
Red Milkweed Beetle
Tetraopes tetrophthalmus
4,058 observations
Goldenrod Soldier Beetle
Chauliognathus pensylvanicus
3,788 observations
Ailanthus Webworm Moth
Atteva aurea
3,754 observations
Widow Skimmer
Libellula luctuosa
3,701 observations
Japanese Beetle
Popillia japonica
3,699 observations
Eastern Pondhawk
Erythemis simplicicollis
3,561 observations
Eastern Forktail
Ischnura verticalis
3,521 observations
Blue Dasher
Pachydiplax longipennis
3,477 observations
Fiery Skipper
Hylephila phyleus
3,459 observations
Black-and-gold Bumble Bee
Bombus auricomus
3,372 observations
Northern Paper Wasp
Polistes fuscatus
3,235 observations
Orange Sulphur
Colias eurytheme
3,200 observations
Isabella Tiger Moth
Pyrrharctia isabella
3,144 observations
Carolina Mantis
Stagmomantis carolina
3,100 observations
Bald-faced Hornet
Dolichovespula maculata
3,093 observations
Peck's Skipper
Polites peckius
3,033 observations
Hackberry Emperor
Asterocampa celtis
3,016 observations
Chinese Mantis
Tenodera sinensis
2,983 observations
Margined Calligrapher
Toxomerus marginatus
2,893 observations
Green Cloverworm Moth
Hypena scabra
2,890 observations
Differential Grasshopper
Melanoplus differentialis
2,834 observations
Six-spotted Tiger Beetle
Cicindela sexguttata
2,816 observations
Question Mark
Polygonia interrogationis
2,792 observations
Spotted Cucumber Beetle
Diabrotica undecimpunctata
2,639 observations
Zabulon Skipper
Lon zabulon
2,597 observations
Golden Northern Bumble Bee
Bombus fervidus
2,512 observations
Brown Marmorated Stink Bug
Halyomorpha halys
2,509 observations
North American Wheel Bug
Arilus cristatus
2,454 observations
Pipevine Swallowtail
Battus philenor
2,433 observations
Chickweed Geometer Moth
Haematopis grataria
2,393 observations
Viceroy
Limenitis archippus
2,377 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)
- Eastern Tiger Swallowtail (Papilio glaucus)
- Pearl Crescent (Phyciodes tharos)
- The most observed insect in Illinois is Monarch (Danaus plexippus), with 19,656 recorded observations.