60 butterflies were recorded flying in South Carolina in October in our iNaturalist sample; 9 of the top 50 are at their peak this month. The list is ranked by number of research-grade observations.
Top butterflies in October

Gulf Fritillary

Long-tailed Skipper

Monarch

Cloudless Sulphur

Common Buckeye

Ocola Skipper

Fiery Skipper

Clouded Skipper

Variegated Fritillary
Zebra Longwing

Pearl Crescent
Sleepy Orange
All butterflies flying in South Carolina in October
| # | Species | Scientific name | Family | Obs. | Peak in state |
|---|---|---|---|---|---|
| 1 | Gulf Fritillary | Dione vanillae | Brush-footed Butterflies | 1,426 | Sep (past peak) |
| 2 | Long-tailed Skipper | Urbanus proteus | Skippers | 644 | Oct (peak) |
| 3 | Monarch | Danaus plexippus | Brush-footed Butterflies | 621 | Oct (peak) |
| 4 | Cloudless Sulphur | Phoebis sennae | Whites, Yellows, and Sulphurs | 470 | Sep (past peak) |
| 5 | Common Buckeye | Junonia coenia | Brush-footed Butterflies | 420 | Sep (past peak) |
| 6 | Ocola Skipper | Panoquina ocola | Skippers | 285 | Oct (peak) |
| 7 | Fiery Skipper | Hylephila phyleus | Skippers | 283 | Jul (past peak) |
| 8 | Clouded Skipper | Lerema accius | Skippers | 257 | Sep (past peak) |
| 9 | Variegated Fritillary | Euptoieta claudia | Brush-footed Butterflies | 144 | Sep (past peak) |
| 10 | Zebra Longwing | Heliconius charithonia | Brush-footed Butterflies | 135 | Oct (peak) |
| 11 | Pearl Crescent | Phyciodes tharos | Brush-footed Butterflies | 130 | Apr (past peak) |
| 12 | Sleepy Orange | Eurema nicippe | Whites, Yellows, and Sulphurs | 125 | Sep (past peak) |
| 13 | Little Yellow | Eurema lisa | Whites, Yellows, and Sulphurs | 95 | Sep (past peak) |
| 14 | Carolina Satyr | Hermeuptychia sosybius | Brush-footed Butterflies | 79 | Apr (past peak) |
| 15 | American Lady | Vanessa virginiensis | Brush-footed Butterflies | 77 | May (past peak) |
| 16 | Southern Pearly-eye | Lethe portlandia | Brush-footed Butterflies | 71 | Sep (past peak) |
| 17 | Painted Lady | Vanessa cardui | Brush-footed Butterflies | 61 | Oct (peak) |
| 18 | Red-banded Hairstreak | Calycopis cecrops | Gossamer-winged Butterflies | 61 | Aug (past peak) |
| 19 | Gray Hairstreak | Strymon melinus | Gossamer-winged Butterflies | 53 | Sep (past peak) |
| 20 | Tropical Checkered-Skipper | Burnsius oileus | Skippers | 48 | Sep (past peak) |
| 21 | Palamedes Swallowtail | Papilio palamedes | Swallowtails and Parnassians | 46 | Apr (past peak) |
| 22 | Eastern Giant Swallowtail | Heraclides cresphontes | Swallowtails and Parnassians | 43 | Aug (past peak) |
| 23 | Eastern Tiger Swallowtail | Papilio glaucus | Swallowtails and Parnassians | 41 | Aug (past peak) |
| 24 | Eastern Tailed-Blue | Everes comyntas | Gossamer-winged Butterflies | 39 | Apr (past peak) |
| 25 | Viceroy | Limenitis archippus | Brush-footed Butterflies | 37 | Sep (past peak) |
| 26 | Question Mark | Polygonia interrogationis | Brush-footed Butterflies | 31 | May (past peak) |
| 27 | Eufala Skipper | Lerodea eufala | Skippers | 31 | Sep (past peak) |
| 28 | Southern Skipperling | Oarisma minima | Skippers | 30 | Oct (peak) |
| 29 | Whirlabout | Hedone vibex | Skippers | 27 | Sep (past peak) |
| 30 | Eastern Gemmed-Satyr | Cyllopsis gemma | Brush-footed Butterflies | 25 | Sep (past peak) |
| 31 | Great Purple Hairstreak | Atlides halesus | Gossamer-winged Butterflies | 24 | Sep (past peak) |
| 32 | Red Admiral | Vanessa atalanta | Brush-footed Butterflies | 22 | May (past peak) |
| 33 | Pipevine Swallowtail | Battus philenor | Swallowtails and Parnassians | 22 | May (past peak) |
| 34 | Small White | Pieris rapae | Whites, Yellows, and Sulphurs | 19 | May (past peak) |
| 35 | Salt Marsh Skipper | Panoquina panoquin | Skippers | 18 | Sep (past peak) |
| 36 | Zarucco Duskywing | Erynnis zarucco | Skippers | 18 | Aug (past peak) |
| 37 | Huron Skipper | Atalopedes huron | Skippers | 18 | Jul (past peak) |
| 38 | White Checkered-Skipper | Burnsius albezens | Skippers | 17 | Sep (past peak) |
| 39 | Common Checkered-Skipper | Burnsius communis | Skippers | 14 | Oct (peak) |
| 40 | Brazilian Skipper | Calpodes ethlius | Skippers | 13 | Oct (peak) |
| 41 | Little Metalmark | Calephelis virginiensis | Metalmark Butterflies | 13 | Aug (past peak) |
| 42 | Cassius Blue | Leptotes cassius | Gossamer-winged Butterflies | 12 | Sep (past peak) |
| 43 | Least Skipper | Ancyloxypha numitor | Skippers | 12 | Aug (past peak) |
| 44 | Broad-winged Skipper | Poanes viator | Skippers | 12 | May (past peak) |
| 45 | Silver-spotted Skipper | Epargyreus clarus | Skippers | 12 | Aug (past peak) |
| 46 | White Peacock | Anartia jatrophae | Brush-footed Butterflies | 11 | Sep (past peak) |
| 47 | Spicebush Swallowtail | Papilio troilus | Swallowtails and Parnassians | 11 | Jul (past peak) |
| 48 | Hackberry Emperor | Asterocampa celtis | Brush-footed Butterflies | 11 | Jul (past peak) |
| 49 | Southern Dogface | Zerene cesonia | Whites, Yellows, and Sulphurs | 10 | Oct (peak) |
| 50 | Orange Sulphur | Colias eurytheme | Whites, Yellows, and Sulphurs | 9 | Mar (past peak) |