60 butterflies were recorded flying in Georgia in September 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 September

Gulf Fritillary

Eastern Tiger Swallowtail

Common Buckeye

Cloudless Sulphur

Monarch

Long-tailed Skipper

Fiery Skipper

Clouded Skipper
Sleepy Orange

Ocola Skipper

Pearl Crescent

Red-banded Hairstreak
All butterflies flying in Georgia in September
| # | Species | Scientific name | Family | Obs. | Peak in state |
|---|---|---|---|---|---|
| 1 | Gulf Fritillary | Dione vanillae | Brush-footed Butterflies | 3,410 | Sep (peak) |
| 2 | Eastern Tiger Swallowtail | Papilio glaucus | Swallowtails and Parnassians | 1,281 | Aug (past peak) |
| 3 | Common Buckeye | Junonia coenia | Brush-footed Butterflies | 1,084 | Sep (peak) |
| 4 | Cloudless Sulphur | Phoebis sennae | Whites, Yellows, and Sulphurs | 1,021 | Sep (peak) |
| 5 | Monarch | Danaus plexippus | Brush-footed Butterflies | 876 | Oct (rising) |
| 6 | Long-tailed Skipper | Urbanus proteus | Skippers | 866 | Oct (rising) |
| 7 | Fiery Skipper | Hylephila phyleus | Skippers | 845 | Jul (past peak) |
| 8 | Clouded Skipper | Lerema accius | Skippers | 782 | Sep (peak) |
| 9 | Sleepy Orange | Eurema nicippe | Whites, Yellows, and Sulphurs | 485 | Aug (past peak) |
| 10 | Ocola Skipper | Panoquina ocola | Skippers | 393 | Oct (rising) |
| 11 | Pearl Crescent | Phyciodes tharos | Brush-footed Butterflies | 388 | Jun (past peak) |
| 12 | Red-banded Hairstreak | Calycopis cecrops | Gossamer-winged Butterflies | 371 | Aug (past peak) |
| 13 | Variegated Fritillary | Euptoieta claudia | Brush-footed Butterflies | 338 | Sep (peak) |
| 14 | Hackberry Emperor | Asterocampa celtis | Brush-footed Butterflies | 319 | Sep (peak) |
| 15 | Carolina Satyr | Hermeuptychia sosybius | Brush-footed Butterflies | 272 | Aug (past peak) |
| 16 | Silver-spotted Skipper | Epargyreus clarus | Skippers | 265 | Aug (past peak) |
| 17 | Gray Hairstreak | Strymon melinus | Gossamer-winged Butterflies | 218 | Jul (past peak) |
| 18 | Viceroy | Limenitis archippus | Brush-footed Butterflies | 216 | Sep (peak) |
| 19 | Eastern Giant Swallowtail | Heraclides cresphontes | Swallowtails and Parnassians | 209 | Aug (past peak) |
| 20 | Spicebush Swallowtail | Papilio troilus | Swallowtails and Parnassians | 207 | Jul (past peak) |
| 21 | Eastern Tailed-Blue | Everes comyntas | Gossamer-winged Butterflies | 197 | May (past peak) |
| 22 | Whirlabout | Hedone vibex | Skippers | 197 | Sep (peak) |
| 23 | Zebra Longwing | Heliconius charithonia | Brush-footed Butterflies | 195 | Oct (rising) |
| 24 | Little Yellow | Eurema lisa | Whites, Yellows, and Sulphurs | 187 | Sep (peak) |
| 25 | Red-spotted Admiral | Limenitis arthemis | Brush-footed Butterflies | 179 | Aug (past peak) |
| 26 | Pipevine Swallowtail | Battus philenor | Swallowtails and Parnassians | 167 | Aug (past peak) |
| 27 | Horace's Duskywing | Erynnis horatius | Skippers | 161 | Aug (past peak) |
| 28 | Palamedes Swallowtail | Papilio palamedes | Swallowtails and Parnassians | 147 | Sep (peak) |
| 29 | Great Purple Hairstreak | Atlides halesus | Gossamer-winged Butterflies | 130 | Sep (peak) |
| 30 | American Lady | Vanessa virginiensis | Brush-footed Butterflies | 129 | May (past peak) |
| 31 | Summer Azure | Celastrina neglecta | Gossamer-winged Butterflies | 107 | May (past peak) |
| 32 | Great Spangled Fritillary | Argynnis cybele | Brush-footed Butterflies | 104 | Jun (past peak) |
| 33 | Painted Lady | Vanessa cardui | Brush-footed Butterflies | 101 | Aug (past peak) |
| 34 | Zabulon Skipper | Lon zabulon | Skippers | 97 | Apr (past peak) |
| 35 | Dun Skipper | Euphyes vestris | Skippers | 86 | Jul (past peak) |
| 36 | Tropical Checkered-Skipper | Burnsius oileus | Skippers | 84 | Oct (rising) |
| 37 | Question Mark | Polygonia interrogationis | Brush-footed Butterflies | 81 | May (past peak) |
| 38 | Red Admiral | Vanessa atalanta | Brush-footed Butterflies | 80 | Jul (past peak) |
| 39 | Small White | Pieris rapae | Whites, Yellows, and Sulphurs | 80 | Jun (past peak) |
| 40 | Least Skipper | Ancyloxypha numitor | Skippers | 80 | Aug (past peak) |
| 41 | Southern Skipperling | Oarisma minima | Skippers | 77 | Aug (past peak) |
| 42 | Silvery Checkerspot | Chlosyne nycteis | Brush-footed Butterflies | 72 | Jul (past peak) |
| 43 | Zarucco Duskywing | Erynnis zarucco | Skippers | 72 | Aug (past peak) |
| 44 | Huron Skipper | Atalopedes huron | Skippers | 67 | Aug (past peak) |
| 45 | Eufala Skipper | Lerodea eufala | Skippers | 63 | Aug (past peak) |
| 46 | Tawny Emperor | Asterocampa clyton | Brush-footed Butterflies | 54 | Sep (peak) |
| 47 | Eastern Gemmed-Satyr | Cyllopsis gemma | Brush-footed Butterflies | 54 | Apr (past peak) |
| 48 | Southern Pearly-eye | Lethe portlandia | Brush-footed Butterflies | 53 | Sep (peak) |
| 49 | Ceraunus Blue | Hemiargus ceraunus | Gossamer-winged Butterflies | 50 | Oct (rising) |
| 50 | Salt Marsh Skipper | Panoquina panoquin | Skippers | 47 | May (past peak) |