60 butterflies were recorded flying in South Carolina in April in our iNaturalist sample; 10 of the top 50 are at their peak this month. The list is ranked by number of research-grade observations.
Top butterflies in April

Eastern Tiger Swallowtail

Palamedes Swallowtail

Carolina Satyr

American Lady

Pearl Crescent

Common Buckeye

Silver-spotted Skipper

Monarch

Little Wood Satyr

Zabulon Skipper

Question Mark

Eastern Tailed-Blue
All butterflies flying in South Carolina in April
| # | Species | Scientific name | Family | Obs. | Peak in state |
|---|---|---|---|---|---|
| 1 | Eastern Tiger Swallowtail | Papilio glaucus | Swallowtails and Parnassians | 342 | Aug (rising) |
| 2 | Palamedes Swallowtail | Papilio palamedes | Swallowtails and Parnassians | 285 | Apr (peak) |
| 3 | Carolina Satyr | Hermeuptychia sosybius | Brush-footed Butterflies | 275 | Apr (peak) |
| 4 | American Lady | Vanessa virginiensis | Brush-footed Butterflies | 250 | May (rising) |
| 5 | Pearl Crescent | Phyciodes tharos | Brush-footed Butterflies | 229 | Apr (peak) |
| 6 | Common Buckeye | Junonia coenia | Brush-footed Butterflies | 192 | Sep (rising) |
| 7 | Silver-spotted Skipper | Epargyreus clarus | Skippers | 183 | Aug (rising) |
| 8 | Monarch | Danaus plexippus | Brush-footed Butterflies | 143 | Oct (rising) |
| 9 | Little Wood Satyr | Megisto cymela | Brush-footed Butterflies | 137 | Apr (peak) |
| 10 | Zabulon Skipper | Lon zabulon | Skippers | 110 | Apr (peak) |
| 11 | Question Mark | Polygonia interrogationis | Brush-footed Butterflies | 109 | May (rising) |
| 12 | Eastern Tailed-Blue | Everes comyntas | Gossamer-winged Butterflies | 104 | Apr (peak) |
| 13 | Zebra Swallowtail | Eurytides marcellus | Swallowtails and Parnassians | 102 | Mar (past peak) |
| 14 | Juvenal's Duskywing | Erynnis juvenalis | Skippers | 96 | Mar (past peak) |
| 15 | Spicebush Swallowtail | Papilio troilus | Swallowtails and Parnassians | 95 | Jul (rising) |
| 16 | Red Admiral | Vanessa atalanta | Brush-footed Butterflies | 84 | May (rising) |
| 17 | Variegated Fritillary | Euptoieta claudia | Brush-footed Butterflies | 79 | Sep (rising) |
| 18 | American Snout | Libytheana carinenta | Brush-footed Butterflies | 69 | Apr (peak) |
| 19 | Summer Azure | Celastrina neglecta | Gossamer-winged Butterflies | 68 | May (rising) |
| 20 | Southern Pearly-eye | Lethe portlandia | Brush-footed Butterflies | 65 | Sep (rising) |
| 21 | Pipevine Swallowtail | Battus philenor | Swallowtails and Parnassians | 62 | May (rising) |
| 22 | Red-banded Hairstreak | Calycopis cecrops | Gossamer-winged Butterflies | 61 | Aug (rising) |
| 23 | Eastern Giant Swallowtail | Heraclides cresphontes | Swallowtails and Parnassians | 59 | Aug (rising) |
| 24 | Northern Cloudywing | Cecropterus pylades | Skippers | 54 | Apr (peak) |
| 25 | Clouded Skipper | Lerema accius | Skippers | 51 | Sep (rising) |
| 26 | Whirlabout | Hedone vibex | Skippers | 51 | Sep (rising) |
| 27 | Eastern Gemmed-Satyr | Cyllopsis gemma | Brush-footed Butterflies | 48 | Sep (rising) |
| 28 | Cloudless Sulphur | Phoebis sennae | Whites, Yellows, and Sulphurs | 40 | Sep (rising) |
| 29 | Hoary Edge | Cecropterus lyciades | Skippers | 38 | Jul (rising) |
| 30 | Southern Cloudywing | Cecropterus bathyllus | Skippers | 37 | Jul (rising) |
| 31 | Eastern Comma | Polygonia comma | Brush-footed Butterflies | 36 | Apr (peak) |
| 32 | Viceroy | Limenitis archippus | Brush-footed Butterflies | 33 | Sep (rising) |
| 33 | Fiery Skipper | Hylephila phyleus | Skippers | 27 | Jul (rising) |
| 34 | Juniper Hairstreak | Callophrys gryneus | Gossamer-winged Butterflies | 27 | Apr (peak) |
| 35 | Mourning Cloak | Nymphalis antiopa | Brush-footed Butterflies | 26 | May (rising) |
| 36 | Least Skipper | Ancyloxypha numitor | Skippers | 25 | Aug (rising) |
| 37 | Salt Marsh Skipper | Panoquina panoquin | Skippers | 25 | Sep (rising) |
| 38 | Small White | Pieris rapae | Whites, Yellows, and Sulphurs | 23 | May (rising) |
| 39 | Sleepy Orange | Eurema nicippe | Whites, Yellows, and Sulphurs | 22 | Sep (rising) |
| 40 | Dun Skipper | Euphyes vestris | Skippers | 20 | Sep (rising) |
| 41 | Henry's Elfin | Callophrys henrici | Gossamer-winged Butterflies | 18 | Mar (past peak) |
| 42 | Sleepy Duskywing | Erynnis brizo | Skippers | 17 | Mar (past peak) |
| 43 | Great Purple Hairstreak | Atlides halesus | Gossamer-winged Butterflies | 17 | Sep (rising) |
| 44 | Appalachian Brown | Lethe appalachia | Brush-footed Butterflies | 16 | Sep (rising) |
| 45 | Hackberry Emperor | Asterocampa celtis | Brush-footed Butterflies | 15 | Jul (rising) |
| 46 | Zarucco Duskywing | Erynnis zarucco | Skippers | 15 | Aug (rising) |
| 47 | Gray Hairstreak | Strymon melinus | Gossamer-winged Butterflies | 14 | Sep (rising) |
| 48 | Broad-winged Skipper | Poanes viator | Skippers | 14 | May (rising) |
| 49 | Brown Elfin | Callophrys augustinus | Gossamer-winged Butterflies | 14 | Mar (past peak) |
| 50 | Gulf Fritillary | Dione vanillae | Brush-footed Butterflies | 13 | Sep (rising) |