60 butterflies were recorded flying in Arkansas in October 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 October

Monarch
Huron Skipper

Fiery Skipper

Common Buckeye

Gulf Fritillary

Clouded Skipper

Common Checkered-Skipper

Variegated Fritillary

Pearl Crescent

Painted Lady

Dainty Sulphur

Cloudless Sulphur
All butterflies flying in Arkansas in October
| # | Species | Scientific name | Family | Obs. | Peak in state |
|---|---|---|---|---|---|
| 1 | Monarch | Danaus plexippus | Brush-footed Butterflies | 1,055 | Sep (past peak) |
| 2 | Huron Skipper | Atalopedes huron | Skippers | 409 | Oct (peak) |
| 3 | Fiery Skipper | Hylephila phyleus | Skippers | 380 | Aug (past peak) |
| 4 | Common Buckeye | Junonia coenia | Brush-footed Butterflies | 315 | Aug (past peak) |
| 5 | Gulf Fritillary | Dione vanillae | Brush-footed Butterflies | 297 | Oct (peak) |
| 6 | Clouded Skipper | Lerema accius | Skippers | 292 | Oct (peak) |
| 7 | Common Checkered-Skipper | Burnsius communis | Skippers | 255 | Oct (peak) |
| 8 | Variegated Fritillary | Euptoieta claudia | Brush-footed Butterflies | 244 | Aug (past peak) |
| 9 | Pearl Crescent | Phyciodes tharos | Brush-footed Butterflies | 232 | Jun (past peak) |
| 10 | Painted Lady | Vanessa cardui | Brush-footed Butterflies | 224 | Sep (past peak) |
| 11 | Dainty Sulphur | Nathalis iole | Whites, Yellows, and Sulphurs | 170 | Oct (peak) |
| 12 | Cloudless Sulphur | Phoebis sennae | Whites, Yellows, and Sulphurs | 166 | Aug (past peak) |
| 13 | Orange Sulphur | Colias eurytheme | Whites, Yellows, and Sulphurs | 150 | Oct (peak) |
| 14 | Question Mark | Polygonia interrogationis | Brush-footed Butterflies | 140 | May (past peak) |
| 15 | Eastern Tailed-Blue | Everes comyntas | Gossamer-winged Butterflies | 105 | Jun (past peak) |
| 16 | Viceroy | Limenitis archippus | Brush-footed Butterflies | 105 | Sep (past peak) |
| 17 | American Lady | Vanessa virginiensis | Brush-footed Butterflies | 92 | Jun (past peak) |
| 18 | Pipevine Swallowtail | Battus philenor | Swallowtails and Parnassians | 92 | Aug (past peak) |
| 19 | Goatweed Leafwing | Anaea andria | Brush-footed Butterflies | 86 | Apr (past peak) |
| 20 | Red-banded Hairstreak | Calycopis cecrops | Gossamer-winged Butterflies | 81 | Sep (past peak) |
| 21 | Sleepy Orange | Eurema nicippe | Whites, Yellows, and Sulphurs | 78 | Aug (past peak) |
| 22 | Little Yellow | Eurema lisa | Whites, Yellows, and Sulphurs | 72 | Sep (past peak) |
| 23 | Phaon Crescent | Phyciodes phaon | Brush-footed Butterflies | 71 | Oct (peak) |
| 24 | Eastern Gemmed-Satyr | Cyllopsis gemma | Brush-footed Butterflies | 65 | Apr (past peak) |
| 25 | Checkered White | Pontia protodice | Whites, Yellows, and Sulphurs | 64 | Jul (past peak) |
| 26 | Carolina Satyr | Hermeuptychia sosybius | Brush-footed Butterflies | 55 | Apr (past peak) |
| 27 | Hackberry Emperor | Asterocampa celtis | Brush-footed Butterflies | 55 | Sep (past peak) |
| 28 | Gray Hairstreak | Strymon melinus | Gossamer-winged Butterflies | 54 | Jun (past peak) |
| 29 | Red Admiral | Vanessa atalanta | Brush-footed Butterflies | 48 | Jul (past peak) |
| 30 | Long-tailed Skipper | Urbanus proteus | Skippers | 46 | Oct (peak) |
| 31 | Ocola Skipper | Panoquina ocola | Skippers | 44 | Oct (peak) |
| 32 | Eastern Comma | Polygonia comma | Brush-footed Butterflies | 35 | Mar (past peak) |
| 33 | Southern Dogface | Zerene cesonia | Whites, Yellows, and Sulphurs | 29 | Sep (past peak) |
| 34 | Common Wood-Nymph | Cercyonis pegala | Brush-footed Butterflies | 28 | Jun (past peak) |
| 35 | Spicebush Swallowtail | Papilio troilus | Swallowtails and Parnassians | 26 | Aug (past peak) |
| 36 | Small White | Pieris rapae | Whites, Yellows, and Sulphurs | 25 | Jul (past peak) |
| 37 | Eastern Tiger Swallowtail | Papilio glaucus | Swallowtails and Parnassians | 25 | Aug (past peak) |
| 38 | Eastern Giant Swallowtail | Heraclides cresphontes | Swallowtails and Parnassians | 23 | Aug (past peak) |
| 39 | Northern Pearly-eye | Lethe anthedon | Brush-footed Butterflies | 23 | Aug (past peak) |
| 40 | Great Spangled Fritillary | Argynnis cybele | Brush-footed Butterflies | 22 | May (past peak) |
| 41 | American Snout | Libytheana carinenta | Brush-footed Butterflies | 20 | Jun (past peak) |
| 42 | Silver-spotted Skipper | Epargyreus clarus | Skippers | 16 | Aug (past peak) |
| 43 | Least Skipper | Ancyloxypha numitor | Skippers | 14 | Aug (past peak) |
| 44 | Red-spotted Admiral | Limenitis arthemis | Brush-footed Butterflies | 13 | Jul (past peak) |
| 45 | Mourning Cloak | Nymphalis antiopa | Brush-footed Butterflies | 10 | May (past peak) |
| 46 | Black Swallowtail | Papilio polyxenes | Swallowtails and Parnassians | 7 | Aug (past peak) |
| 47 | Gray Comma | Polygonia progne | Brush-footed Butterflies | 7 | Oct (peak) |
| 48 | Zabulon Skipper | Lon zabulon | Skippers | 6 | Aug (past peak) |
| 49 | Queen | Danaus gilippus | Brush-footed Butterflies | 5 | Sep (past peak) |
| 50 | Dun Skipper | Euphyes vestris | Skippers | 5 | Aug (past peak) |