Insects & Arthropods of Connecticut
The insects & arthropods most often spotted in Connecticut, ranked by recent research-grade observations.
Most-observed insects & arthropods in Connecticut
Common Eastern Bumble Bee
Bombus impatiens
7,216 observations
Monarch
Danaus plexippus
4,372 observations
Asian Lady Beetle
Harmonia axyridis
4,012 observations
Western Honey Bee
Apis mellifera
3,261 observations
Spotted Lanternfly
Lycorma delicatula
2,297 observations · iNaturalist
Brown-belted Bumble Bee
Bombus griseocollis
1,862 observations
Ligated Furrow Bee
Halictus ligatus
1,815 observations · iNaturalist
Eastern Carpenter Bee
Xylocopa virginica
1,804 observations
Eastern Tiger Swallowtail
Papilio glaucus
1,743 observations
Black Swallowtail
Papilio polyxenes
1,721 observations
Two-spotted Bumble Bee
Bombus bimaculatus
1,635 observations
Spongy Moth
Lymantria dispar
1,629 observations
Blue Dasher
Pachydiplax longipennis
1,596 observations
Isabella Tiger Moth
Pyrrharctia isabella
1,534 observations
Eastern Tent Caterpillar Moth
Malacosoma americana
1,444 observations · iNaturalist
Silver-spotted Skipper
Epargyreus clarus
1,414 observations
Small White
Pieris rapae
1,390 observations
Spicebush Swallowtail
Papilio troilus
1,379 observations
Oriental Beetle
Exomala orientalis
1,304 observations · iNaturalist
Huron Skipper
Atalopedes huron
1,303 observations · iNaturalist
Northern Paper Wasp
Polistes fuscatus
1,276 observations
Orchard Orbweaver
Leucauge venusta
1,245 observations
Hickory Tussock Moth
Lophocampa caryae
1,162 observations
Common Whitetail
Plathemis lydia
1,128 observations
Zabulon Skipper
Lon zabulon
1,120 observations · iNaturalist
Margined Calligrapher
Toxomerus marginatus
1,105 observations · iNaturalist
Winter Firefly
Photinus corruscus
1,094 observations · iNaturalist
American Nursery Web Spider
Pisaurina mira
1,087 observations · iNaturalist
Great Spangled Fritillary
Argynnis cybele
1,075 observations · iNaturalist
Chinese Mantis
Tenodera sinensis
1,068 observations
Bold Jumping Spider
Phidippus audax
1,061 observations
Brown Marmorated Stink Bug
Halyomorpha halys
1,054 observations
Ebony Jewelwing
Calopteryx maculata
1,050 observations
Elegant Grass-veneer
Microcrambus elegans
1,046 observations · iNaturalist
Eastern Calligrapher
Toxomerus geminatus
1,043 observations
Peck's Skipper
Polites peckius
1,012 observations · iNaturalist
Eastern Pondhawk
Erythemis simplicicollis
1,011 observations
Pale Green Assassin Bug
Zelus luridus
998 observations
Broad-necked Root Borer
Prionus laticollis
997 observations · iNaturalist
Ailanthus Webworm Moth
Atteva aurea
958 observations · iNaturalist
Bald-faced Hornet
Dolichovespula maculata
945 observations
Pale Beauty
Campaea perlata
944 observations · iNaturalist
Acanthocephala terminalis
Acanthocephala terminalis
939 observations · iNaturalist
Lesser Maple Spanworm Moth
Macaria pustularia
922 observations · iNaturalist
Japanese Beetle
Popillia japonica
912 observations
American Lady
Vanessa virginiensis
895 observations
Bicolored Striped Sweat Bee
Agapostemon virescens
872 observations
Polyphemus Moth
Antheraea polyphemus
862 observations
Western Conifer Seed Bug
Leptoglossus occidentalis
824 observations · iNaturalist
Six-spotted Tiger Beetle
Cicindela sexguttata
810 observations