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Butterflies of Connecticut

Peak month: August

Butterfly flight seasons in Connecticut from 27,610 research-grade iNaturalist observations. August has the most activity.

By month

AprilMayJuneJulyAugustSeptemberOctoberNovember

Connecticut butterfly calendar (top 40)

JFMAMJJASOND
Monarch
Eastern Tiger Swallowtail
Spicebush Swallowtail
Small White
Huron Skipper
Silver-spotted Skipper
Great Spangled Fritillary
Zabulon Skipper
Peck's Skipper
American Lady
Eastern Tailed-Blue
Red Admiral
Pearl Crescent
American Copper
Red-banded Hairstreak
Little Wood Satyr
Mourning Cloak
Common Buckeye
Red-spotted Admiral
Eastern Comma
Gray Hairstreak
Black Swallowtail
Painted Lady
Question Mark
Viceroy
Least Skipper
Wild Indigo Duskywing
Banded Hairstreak
Orange Sulphur
Broad-winged Skipper
Tawny-edged Skipper
Northern Broken-Dash
Common Wood-Nymph
Summer Azure
Dun Skipper
Clouded Sulphur
Juvenal's Duskywing
Little Glassywing
Eastern Giant Swallowtail
Appalachian Brown
Fewer More observations (relative to each row's peak month)

Activity by month (all species)

JanFebMarAprMayJunJulAugSepOctNovDec

Most-photographed butterflies in Connecticut

Monarch
MonarchDanaus plexippus
Eastern Tiger Swallowtail
Eastern Tiger SwallowtailPapilio glaucus
Spicebush Swallowtail
Spicebush SwallowtailPapilio troilus
Small White
Small WhitePieris rapae
Huron SkipperAtalopedes huron
Silver-spotted Skipper
Silver-spotted SkipperEpargyreus clarus
Great Spangled Fritillary
Great Spangled FritillaryArgynnis cybele
Zabulon Skipper
Zabulon SkipperLon zabulon
Peck's Skipper
Peck's SkipperPolites peckius
American Lady
American LadyVanessa virginiensis
Eastern Tailed-Blue
Eastern Tailed-BlueEveres comyntas
Red Admiral
Red AdmiralVanessa atalanta
Pearl Crescent
Pearl CrescentPhyciodes tharos
American CopperLycaena hypophlaeas
Red-banded Hairstreak
Red-banded HairstreakCalycopis cecrops
Little Wood Satyr
Little Wood SatyrMegisto cymela

Where to photograph butterflies in Connecticut

Connecticut College ArboretumBotanical Garden
Connecticut College ArboretumSoutheastern Connecticut Planning Region
Marsh Botanical GardenBotanical Garden
Marsh Botanical GardenSouth Central Connecticut Planning Region
Gillette Castle State ParkState Park
Gillette Castle State ParkLower Connecticut River Valley Planning Region
Hammonasset Beach State ParkState Park
Hammonasset Beach State ParkSouth Central Connecticut Planning Region
Bigelow Hollow State ParkState Park
Bigelow Hollow State ParkNortheastern Connecticut Planning Region
Dinosaur State Park and ArboretumState Park
Dinosaur State Park and ArboretumCapitol Planning Region
Harkness Memorial State ParkState Park
Harkness Memorial State ParkSoutheastern Connecticut Planning Region
Indian Well State ParkState Park
Indian Well State ParkNaugatuck Valley Planning Region