60 butterflies were recorded flying in Maine in June in our iNaturalist sample; 13 of the top 50 are at their peak this month. The list is ranked by number of research-grade observations.
Top butterflies in June

Canadian Tiger Swallowtail

Hobomok Skipper
Common Ringlet

Northern Crescent

Little Wood Satyr

Long Dash

Silvery Blue
American Copper

American Lady
Mourning Cloak

Red Admiral

Monarch
All butterflies flying in Maine in June
| # | Species | Scientific name | Family | Obs. | Peak in state |
|---|---|---|---|---|---|
| 1 | Canadian Tiger Swallowtail | Papilio canadensis | Swallowtails and Parnassians | 795 | Jun (peak) |
| 2 | Hobomok Skipper | Lon hobomok | Skippers | 453 | Jun (peak) |
| 3 | Common Ringlet | Coenonympha california | Brush-footed Butterflies | 413 | Jun (peak) |
| 4 | Northern Crescent | Phyciodes cocyta | Brush-footed Butterflies | 340 | Jun (peak) |
| 5 | Little Wood Satyr | Megisto cymela | Brush-footed Butterflies | 173 | Jun (peak) |
| 6 | Long Dash | Limochores mystic | Skippers | 163 | Jul (rising) |
| 7 | Silvery Blue | Glaucopsyche lygdamus | Gossamer-winged Butterflies | 157 | Jun (peak) |
| 8 | American Copper | Lycaena hypophlaeas | Gossamer-winged Butterflies | 146 | Aug (rising) |
| 9 | American Lady | Vanessa virginiensis | Brush-footed Butterflies | 130 | Aug (rising) |
| 10 | Mourning Cloak | Nymphalis antiopa | Brush-footed Butterflies | 128 | Apr (past peak) |
| 11 | Red Admiral | Vanessa atalanta | Brush-footed Butterflies | 124 | Jul (rising) |
| 12 | Monarch | Danaus plexippus | Brush-footed Butterflies | 121 | Aug (rising) |
| 13 | Viceroy | Limenitis archippus | Brush-footed Butterflies | 118 | Aug (rising) |
| 14 | Essex Skipper | Thymelicus lineola | Skippers | 110 | Jul (rising) |
| 15 | American Silver-bordered Fritillary | Boloria myrina | Brush-footed Butterflies | 106 | Aug (rising) |
| 16 | Silver-spotted Skipper | Epargyreus clarus | Skippers | 101 | Jul (rising) |
| 17 | Peck's Skipper | Polites peckius | Skippers | 96 | Jul (rising) |
| 18 | Red-spotted Admiral | Limenitis arthemis | Brush-footed Butterflies | 87 | Aug (rising) |
| 19 | Atlantis Fritillary | Argynnis atlantis | Brush-footed Butterflies | 86 | Jul (rising) |
| 20 | Eastern Pine Elfin | Callophrys niphon | Gossamer-winged Butterflies | 57 | May (past peak) |
| 21 | Baltimore Checkerspot | Euphydryas phaeton | Brush-footed Butterflies | 56 | Jun (peak) |
| 22 | Northern Cloudywing | Cecropterus pylades | Skippers | 55 | Jun (peak) |
| 23 | Small White | Pieris rapae | Whites, Yellows, and Sulphurs | 54 | Aug (rising) |
| 24 | Dreamy Duskywing | Erynnis icelus | Skippers | 49 | Jun (peak) |
| 25 | Juvenal's Duskywing | Erynnis juvenalis | Skippers | 48 | May (past peak) |
| 26 | Great Spangled Fritillary | Argynnis cybele | Brush-footed Butterflies | 48 | Jul (rising) |
| 27 | Least Skipper | Ancyloxypha numitor | Skippers | 44 | Aug (rising) |
| 28 | Tawny-edged Skipper | Polites themistocles | Skippers | 42 | Jun (peak) |
| 29 | Silvery Checkerspot | Chlosyne nycteis | Brush-footed Butterflies | 35 | Jun (peak) |
| 30 | Northern Pearly-eye | Lethe anthedon | Brush-footed Butterflies | 30 | Jul (rising) |
| 31 | Question Mark | Polygonia interrogationis | Brush-footed Butterflies | 29 | Sep (rising) |
| 32 | Green Comma | Polygonia faunus | Brush-footed Butterflies | 26 | Aug (rising) |
| 33 | Painted Lady | Vanessa cardui | Brush-footed Butterflies | 23 | Aug (rising) |
| 34 | Harvester | Feniseca tarquinius | Gossamer-winged Butterflies | 22 | Jun (peak) |
| 35 | Pearl Crescent | Phyciodes tharos | Brush-footed Butterflies | 21 | Jul (rising) |
| 36 | Brown Elfin | Callophrys augustinus | Gossamer-winged Butterflies | 18 | May (past peak) |
| 37 | Eyed Brown | Lethe eurydice | Brush-footed Butterflies | 18 | Jul (rising) |
| 38 | Eastern Comma | Polygonia comma | Brush-footed Butterflies | 17 | Jul (rising) |
| 39 | Clouded Sulphur | Colias philodice | Whites, Yellows, and Sulphurs | 15 | Sep (rising) |
| 40 | Bronze Copper | Tharsalea hyllus | Gossamer-winged Butterflies | 15 | Jun (peak) |
| 41 | Wild Indigo Duskywing | Erynnis baptisiae | Skippers | 14 | Aug (rising) |
| 42 | Dun Skipper | Euphyes vestris | Skippers | 12 | Jul (rising) |
| 43 | Eastern Tailed-Blue | Everes comyntas | Gossamer-winged Butterflies | 12 | Aug (rising) |
| 44 | Gray Comma | Polygonia progne | Brush-footed Butterflies | 12 | May (past peak) |
| 45 | Appalachian Brown | Lethe appalachia | Brush-footed Butterflies | 9 | Jul (rising) |
| 46 | Orange Sulphur | Colias eurytheme | Whites, Yellows, and Sulphurs | 8 | Sep (rising) |
| 47 | Banded Hairstreak | Satyrium calanus | Gossamer-winged Butterflies | 8 | Jul (rising) |
| 48 | Milbert's Tortoiseshell | Aglais milberti | Brush-footed Butterflies | 7 | Aug (rising) |
| 49 | Aphrodite Fritillary | Argynnis aphrodite | Brush-footed Butterflies | 7 | Jul (rising) |
| 50 | Black Swallowtail | Papilio polyxenes | Swallowtails and Parnassians | 6 | Aug (rising) |