26 butterflies were recorded flying in Connecticut in April in our iNaturalist sample; 2 of the top 50 are at their peak this month. The list is ranked by number of research-grade observations.
Top butterflies in April
Mourning Cloak
Small White
American Lady
Eastern Comma
Juvenal's Duskywing
Red Admiral
Falcate Orangetip
Eastern Tailed-Blue
Spring Azure
Eastern Tiger Swallowtail
Eastern Pine Elfin
American Copper
All butterflies flying in Connecticut in April
| # | Species | Scientific name | Family | Obs. | Peak in state |
|---|---|---|---|---|---|
| 1 | Mourning Cloak | Nymphalis antiopa | Brush-footed Butterflies | 120 | Apr (peak) |
| 2 | Small White | Pieris rapae | Whites, Yellows, and Sulphurs | 75 | Jul (rising) |
| 3 | American Lady | Vanessa virginiensis | Brush-footed Butterflies | 70 | Aug (rising) |
| 4 | Eastern Comma | Polygonia comma | Brush-footed Butterflies | 45 | Jul (rising) |
| 5 | Juvenal's Duskywing | Erynnis juvenalis | Skippers | 28 | May (rising) |
| 6 | Red Admiral | Vanessa atalanta | Brush-footed Butterflies | 26 | Jul (rising) |
| 7 | Falcate Orangetip | Anthocharis midea | Whites, Yellows, and Sulphurs | 25 | May (rising) |
| 8 | Eastern Tailed-Blue | Everes comyntas | Gossamer-winged Butterflies | 20 | Aug (rising) |
| 9 | Spring Azure | Celastrina ladon | Gossamer-winged Butterflies | 20 | Apr (peak) |
| 10 | Eastern Tiger Swallowtail | Papilio glaucus | Swallowtails and Parnassians | 20 | Aug (rising) |
| 11 | Eastern Pine Elfin | Callophrys niphon | Gossamer-winged Butterflies | 16 | May (rising) |
| 12 | American Copper | Lycaena hypophlaeas | Gossamer-winged Butterflies | 12 | Aug (rising) |
| 13 | Spicebush Swallowtail | Papilio troilus | Swallowtails and Parnassians | 11 | Aug (rising) |
| 14 | Brown Elfin | Callophrys augustinus | Gossamer-winged Butterflies | 7 | May (rising) |
| 15 | Painted Lady | Vanessa cardui | Brush-footed Butterflies | 6 | Sep (rising) |
| 16 | Gray Hairstreak | Strymon melinus | Gossamer-winged Butterflies | 6 | Aug (rising) |
| 17 | Clouded Sulphur | Colias philodice | Whites, Yellows, and Sulphurs | 6 | Sep (rising) |
| 18 | White M Hairstreak | Parrhasius m-album | Gossamer-winged Butterflies | 4 | Sep (rising) |
| 19 | Black Swallowtail | Papilio polyxenes | Swallowtails and Parnassians | 3 | Aug (rising) |
| 20 | Orange Sulphur | Colias eurytheme | Whites, Yellows, and Sulphurs | 3 | Sep (rising) |
| 21 | Monarch | Danaus plexippus | Brush-footed Butterflies | 2 | Aug (rising) |
| 22 | Wild Indigo Duskywing | Erynnis baptisiae | Skippers | 2 | Jul (rising) |
| 23 | Question Mark | Polygonia interrogationis | Brush-footed Butterflies | 2 | Jul (rising) |
| 24 | Juniper Hairstreak | Callophrys gryneus | Gossamer-winged Butterflies | 2 | May (rising) |
| 25 | Pearl Crescent | Phyciodes tharos | Brush-footed Butterflies | 1 | Jul (rising) |
| 26 | Silver-spotted Skipper | Epargyreus clarus | Skippers | 1 | Jul (rising) |