16 butterflies were recorded flying in Maine 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
Eastern Comma
Green Comma
American Lady
Small White
Eastern Pine Elfin
Brown Elfin
Red Admiral
Gray Comma
Monarch
Satyr Comma
Milbert's Tortoiseshell
All butterflies flying in Maine in April
| # | Species | Scientific name | Family | Obs. | Peak in state |
|---|---|---|---|---|---|
| 1 | Mourning Cloak | Nymphalis antiopa | Brush-footed Butterflies | 176 | Apr (peak) |
| 2 | Eastern Comma | Polygonia comma | Brush-footed Butterflies | 27 | Jul (rising) |
| 3 | Green Comma | Polygonia faunus | Brush-footed Butterflies | 23 | Aug (rising) |
| 4 | American Lady | Vanessa virginiensis | Brush-footed Butterflies | 15 | Aug (rising) |
| 5 | Small White | Pieris rapae | Whites, Yellows, and Sulphurs | 11 | Aug (rising) |
| 6 | Eastern Pine Elfin | Callophrys niphon | Gossamer-winged Butterflies | 8 | May (rising) |
| 7 | Brown Elfin | Callophrys augustinus | Gossamer-winged Butterflies | 7 | May (rising) |
| 8 | Red Admiral | Vanessa atalanta | Brush-footed Butterflies | 5 | Jul (rising) |
| 9 | Gray Comma | Polygonia progne | Brush-footed Butterflies | 4 | May (rising) |
| 10 | Monarch | Danaus plexippus | Brush-footed Butterflies | 2 | Aug (rising) |
| 11 | Satyr Comma | Polygonia satyrus | Brush-footed Butterflies | 2 | Apr (peak) |
| 12 | Milbert's Tortoiseshell | Aglais milberti | Brush-footed Butterflies | 2 | Aug (rising) |
| 13 | Painted Lady | Vanessa cardui | Brush-footed Butterflies | 1 | Aug (rising) |
| 14 | Black Swallowtail | Papilio polyxenes | Swallowtails and Parnassians | 1 | Aug (rising) |
| 15 | Clouded Sulphur | Colias philodice | Whites, Yellows, and Sulphurs | 1 | Sep (rising) |
| 16 | Atlantis Fritillary | Argynnis atlantis | Brush-footed Butterflies | 1 | Jul (rising) |