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Insects & Arthropods of Connecticut

The insects & arthropods most often spotted in Connecticut, ranked by recent research-grade observations.

86,887
recent observations
50
species listed
50
insects & arthropods

Naturalists have logged 86,887 research-grade observations across the 50 most-recorded species in Connecticut. The most frequently seen is the Common Eastern Bumble Bee, with 8,275 recorded sightings.

Most-observed insects & arthropods in Connecticut

Common Eastern Bumble Bee
Bombus impatiens
8,275 observations
Monarch
Danaus plexippus
5,344 observations
Asian Lady Beetle
Harmonia axyridis
4,434 observations
Spotted Lanternfly
Lycorma delicatula
3,862 observations
Western Honey Bee
Apis mellifera
3,597 observations
Eastern Tiger Swallowtail
Papilio glaucus
2,227 observations
Brown-belted Bumble Bee
Bombus griseocollis
2,110 observations
Eastern Carpenter Bee
Xylocopa virginica
1,999 observations
Ligated Furrow Bee
Halictus ligatus
1,973 observations · iNaturalist
Black Swallowtail
Papilio polyxenes
1,905 observations
Blue Dasher
Pachydiplax longipennis
1,816 observations
Isabella Tiger Moth
Pyrrharctia isabella
1,797 observations
Two-spotted Bumble Bee
Bombus bimaculatus
1,706 observations
Spicebush Swallowtail
Papilio troilus
1,701 observations
Silver-spotted Skipper
Epargyreus clarus
1,674 observations
Spongy Moth
Lymantria dispar
1,655 observations
Hickory Tussock Moth
Lophocampa caryae
1,647 observations
Small White
Pieris rapae
1,635 observations
Oriental Beetle
Exomala orientalis
1,598 observations · iNaturalist
Eastern Tent Caterpillar Moth
Malacosoma americana
1,467 observations · iNaturalist
Great Spangled Fritillary
Argynnis cybele
1,414 observations · iNaturalist
Huron Skipper
Atalopedes huron
1,398 observations · iNaturalist
Orchard Orbweaver
Leucauge venusta
1,330 observations
Northern Paper Wasp
Polistes fuscatus
1,321 observations
Margined Calligrapher
Toxomerus marginatus
1,291 observations · iNaturalist
Zabulon Skipper
Lon zabulon
1,288 observations · iNaturalist
Common Whitetail
Plathemis lydia
1,256 observations
Eastern Calligrapher
Toxomerus geminatus
1,231 observations
American Nursery Web Spider
Pisaurina mira
1,206 observations · iNaturalist
Peck's Skipper
Polites peckius
1,205 observations · iNaturalist
Broad-necked Root Borer
Prionus laticollis
1,200 observations · iNaturalist
Elegant Grass-veneer
Microcrambus elegans
1,194 observations · iNaturalist
Chinese Mantis
Tenodera sinensis
1,190 observations
Ebony Jewelwing
Calopteryx maculata
1,178 observations
Bold Jumping Spider
Phidippus audax
1,171 observations
Eastern Pondhawk
Erythemis simplicicollis
1,143 observations
Japanese Beetle
Popillia japonica
1,102 observations
Lesser Maple Spanworm Moth
Macaria pustularia
1,101 observations · iNaturalist
Winter Firefly
Photinus corruscus
1,100 observations · iNaturalist
Brown Marmorated Stink Bug
Halyomorpha halys
1,096 observations
Pale Beauty
Campaea perlata
1,092 observations · iNaturalist
Pale Green Assassin Bug
Zelus luridus
1,075 observations
Ailanthus Webworm Moth
Atteva aurea
1,049 observations · iNaturalist
Western Conifer Seed Bug
Leptoglossus occidentalis
1,040 observations · iNaturalist
American Lady
Vanessa virginiensis
1,015 observations
Bald-faced Hornet
Dolichovespula maculata
1,010 observations
Acanthocephala terminalis
Acanthocephala terminalis
979 observations · iNaturalist
Bicolored Striped Sweat Bee
Agapostemon virescens
955 observations
Polyphemus Moth
Antheraea polyphemus
935 observations
Large Maple Spanworm Moth
Prochoerodes lineola
900 observations · iNaturalist

Built from recent research-grade iNaturalist observations. Identifications are community-sourced and may occasionally be wrong, and the ranking reflects where people record and photograph wildlife, so a species seen often here is not necessarily rare elsewhere. Some plants and animals are only out in certain seasons. Treat this as a lively snapshot of what people are finding, not a formal checklist.

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