50 butterflies were recorded flying in Nebraska in October in our iNaturalist sample; 3 of the top 50 are at their peak this month. The list is ranked by number of research-grade observations.
Top butterflies in October

Painted Lady

Monarch
Huron Skipper

Orange Sulphur

Common Buckeye

Common Checkered-Skipper

Eastern Comma

Fiery Skipper

Pearl Crescent

Variegated Fritillary

Dainty Sulphur

Red Admiral
All butterflies flying in Nebraska in October
| # | Species | Scientific name | Family | Obs. | Peak in state |
|---|---|---|---|---|---|
| 1 | Painted Lady | Vanessa cardui | Brush-footed Butterflies | 252 | Sep (past peak) |
| 2 | Monarch | Danaus plexippus | Brush-footed Butterflies | 240 | Aug (past peak) |
| 3 | Huron Skipper | Atalopedes huron | Skippers | 158 | Aug (past peak) |
| 4 | Orange Sulphur | Colias eurytheme | Whites, Yellows, and Sulphurs | 88 | Sep (past peak) |
| 5 | Common Buckeye | Junonia coenia | Brush-footed Butterflies | 85 | Aug (past peak) |
| 6 | Common Checkered-Skipper | Burnsius communis | Skippers | 59 | Jun (past peak) |
| 7 | Eastern Comma | Polygonia comma | Brush-footed Butterflies | 57 | Jul (past peak) |
| 8 | Fiery Skipper | Hylephila phyleus | Skippers | 55 | Sep (past peak) |
| 9 | Pearl Crescent | Phyciodes tharos | Brush-footed Butterflies | 54 | Aug (past peak) |
| 10 | Variegated Fritillary | Euptoieta claudia | Brush-footed Butterflies | 48 | Jul (past peak) |
| 11 | Dainty Sulphur | Nathalis iole | Whites, Yellows, and Sulphurs | 39 | Sep (past peak) |
| 12 | Red Admiral | Vanessa atalanta | Brush-footed Butterflies | 35 | Jun (past peak) |
| 13 | Black Swallowtail | Papilio polyxenes | Swallowtails and Parnassians | 32 | Jul (past peak) |
| 14 | Small White | Pieris rapae | Whites, Yellows, and Sulphurs | 31 | Jul (past peak) |
| 15 | Silver-spotted Skipper | Epargyreus clarus | Skippers | 31 | Aug (past peak) |
| 16 | Gray Hairstreak | Strymon melinus | Gossamer-winged Butterflies | 24 | Aug (past peak) |
| 17 | Clouded Sulphur | Colias philodice | Whites, Yellows, and Sulphurs | 16 | Sep (past peak) |
| 18 | Checkered White | Pontia protodice | Whites, Yellows, and Sulphurs | 16 | Jul (past peak) |
| 19 | Eastern Tiger Swallowtail | Papilio glaucus | Swallowtails and Parnassians | 16 | Aug (past peak) |
| 20 | Gulf Fritillary | Dione vanillae | Brush-footed Butterflies | 8 | Oct (peak) |
| 21 | Mourning Cloak | Nymphalis antiopa | Brush-footed Butterflies | 7 | May (past peak) |
| 22 | Eastern Tailed-Blue | Everes comyntas | Gossamer-winged Butterflies | 7 | Aug (past peak) |
| 23 | Viceroy | Limenitis archippus | Brush-footed Butterflies | 7 | Sep (past peak) |
| 24 | American Lady | Vanessa virginiensis | Brush-footed Butterflies | 6 | Apr (past peak) |
| 25 | American Snout | Libytheana carinenta | Brush-footed Butterflies | 6 | Jul (past peak) |
| 26 | Question Mark | Polygonia interrogationis | Brush-footed Butterflies | 4 | Jun (past peak) |
| 27 | Reakirt's Blue | Echinargus isola | Gossamer-winged Butterflies | 4 | Jun (past peak) |
| 28 | Cloudless Sulphur | Phoebis sennae | Whites, Yellows, and Sulphurs | 3 | Sep (past peak) |
| 29 | Pipevine Swallowtail | Battus philenor | Swallowtails and Parnassians | 3 | Jul (past peak) |
| 30 | Marine Blue | Leptotes marina | Gossamer-winged Butterflies | 3 | Sep (past peak) |
| 31 | Mylitta Crescent | Phyciodes mylitta | Brush-footed Butterflies | 3 | Sep (past peak) |
| 32 | Hackberry Emperor | Asterocampa celtis | Brush-footed Butterflies | 3 | Jun (past peak) |
| 33 | Eastern Giant Swallowtail | Heraclides cresphontes | Swallowtails and Parnassians | 3 | Aug (past peak) |
| 34 | Melissa Blue | Plebejus melissa | Gossamer-winged Butterflies | 3 | Jun (past peak) |
| 35 | Texan Crescent | Anthanassa texana | Brush-footed Butterflies | 3 | Oct (peak) |
| 36 | Purplish Copper | Tharsalea helloides | Gossamer-winged Butterflies | 3 | Sep (past peak) |
| 37 | Queen | Danaus gilippus | Brush-footed Butterflies | 2 | Jul (past peak) |
| 38 | Western Pygmy-Blue | Brephidium exilis | Gossamer-winged Butterflies | 2 | Oct (peak) |
| 39 | Wild Indigo Duskywing | Erynnis baptisiae | Skippers | 2 | Jul (past peak) |
| 40 | Little Yellow | Eurema lisa | Whites, Yellows, and Sulphurs | 2 | Jul (past peak) |
| 41 | Gray Comma | Polygonia progne | Brush-footed Butterflies | 2 | Jul (past peak) |
| 42 | Goatweed Leafwing | Anaea andria | Brush-footed Butterflies | 2 | Apr (past peak) |
| 43 | Western White | Pontia occidentalis | Whites, Yellows, and Sulphurs | 2 | Mar (past peak) |
| 44 | Tawny-edged Skipper | Polites themistocles | Skippers | 1 | Aug (past peak) |
| 45 | Red-spotted Admiral | Limenitis arthemis | Brush-footed Butterflies | 1 | Jul (past peak) |
| 46 | Bordered Patch | Chlosyne lacinia | Brush-footed Butterflies | 1 | Sep (past peak) |
| 47 | Peck's Skipper | Polites peckius | Skippers | 1 | Sep (past peak) |
| 48 | Gorgone Checkerspot | Chlosyne gorgone | Brush-footed Butterflies | 1 | Jul (past peak) |
| 49 | Bronze Copper | Tharsalea hyllus | Gossamer-winged Butterflies | 1 | Jun (past peak) |
| 50 | Great Spangled Fritillary | Argynnis cybele | Brush-footed Butterflies | 1 | Jun (past peak) |