60 butterflies were recorded flying in New Mexico 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

Western Pygmy-Blue

Painted Lady

Variegated Fritillary

Fiery Skipper

Monarch

Dainty Sulphur

American Snout

Reakirt's Blue
Sleepy Orange

Queen
Checkered White

Orange Sulphur
All butterflies flying in New Mexico in October
| # | Species | Scientific name | Family | Obs. | Peak in state |
|---|---|---|---|---|---|
| 1 | Western Pygmy-Blue | Brephidium exilis | Gossamer-winged Butterflies | 282 | Sep (past peak) |
| 2 | Painted Lady | Vanessa cardui | Brush-footed Butterflies | 271 | Jul (past peak) |
| 3 | Variegated Fritillary | Euptoieta claudia | Brush-footed Butterflies | 183 | Jul (past peak) |
| 4 | Fiery Skipper | Hylephila phyleus | Skippers | 182 | Oct (peak) |
| 5 | Monarch | Danaus plexippus | Brush-footed Butterflies | 180 | Aug (past peak) |
| 6 | Dainty Sulphur | Nathalis iole | Whites, Yellows, and Sulphurs | 166 | Oct (peak) |
| 7 | American Snout | Libytheana carinenta | Brush-footed Butterflies | 129 | Oct (peak) |
| 8 | Reakirt's Blue | Echinargus isola | Gossamer-winged Butterflies | 116 | Jul (past peak) |
| 9 | Sleepy Orange | Eurema nicippe | Whites, Yellows, and Sulphurs | 111 | Jul (past peak) |
| 10 | Queen | Danaus gilippus | Brush-footed Butterflies | 105 | Aug (past peak) |
| 11 | Checkered White | Pontia protodice | Whites, Yellows, and Sulphurs | 104 | Jul (past peak) |
| 12 | Orange Sulphur | Colias eurytheme | Whites, Yellows, and Sulphurs | 100 | Jul (past peak) |
| 13 | Small White | Pieris rapae | Whites, Yellows, and Sulphurs | 77 | May (past peak) |
| 14 | Gray Buckeye | Junonia grisea | Brush-footed Butterflies | 66 | Oct (peak) |
| 15 | Southern Dogface | Zerene cesonia | Whites, Yellows, and Sulphurs | 54 | Oct (peak) |
| 16 | Gray Hairstreak | Strymon melinus | Gossamer-winged Butterflies | 53 | Jul (past peak) |
| 17 | Two-tailed Swallowtail | Papilio multicaudata | Swallowtails and Parnassians | 50 | Jul (past peak) |
| 18 | Arizona Sister | Adelpha eulalia | Brush-footed Butterflies | 45 | Aug (past peak) |
| 19 | Black Swallowtail | Papilio polyxenes | Swallowtails and Parnassians | 39 | Jul (past peak) |
| 20 | West Coast Lady | Vanessa annabella | Brush-footed Butterflies | 36 | Jul (past peak) |
| 21 | Orange Skipperling | Oarisma aurantiaca | Skippers | 34 | Sep (past peak) |
| 22 | Mourning Cloak | Nymphalis antiopa | Brush-footed Butterflies | 33 | Jun (past peak) |
| 23 | Red Admiral | Vanessa atalanta | Brush-footed Butterflies | 32 | Jul (past peak) |
| 24 | Mexican Yellow | Eurema mexicana | Whites, Yellows, and Sulphurs | 32 | Oct (peak) |
| 25 | Clouded Sulphur | Colias philodice | Whites, Yellows, and Sulphurs | 29 | Sep (past peak) |
| 26 | Bordered Patch | Chlosyne lacinia | Brush-footed Butterflies | 28 | Aug (past peak) |
| 27 | Lupine Blue | Icaricia lupini | Gossamer-winged Butterflies | 28 | May (past peak) |
| 28 | Ceraunus Blue | Hemiargus ceraunus | Gossamer-winged Butterflies | 24 | Aug (past peak) |
| 29 | Mylitta Crescent | Phyciodes mylitta | Brush-footed Butterflies | 23 | Apr (past peak) |
| 30 | American Lady | Vanessa virginiensis | Brush-footed Butterflies | 17 | Jul (past peak) |
| 31 | Question Mark | Polygonia interrogationis | Brush-footed Butterflies | 16 | Aug (past peak) |
| 32 | Fatal Metalmark | Calephelis nemesis | Metalmark Butterflies | 15 | Oct (peak) |
| 33 | Great Purple Hairstreak | Atlides halesus | Gossamer-winged Butterflies | 14 | Apr (past peak) |
| 34 | Marine Blue | Leptotes marina | Gossamer-winged Butterflies | 14 | May (past peak) |
| 35 | Common Buckeye | Junonia coenia | Brush-footed Butterflies | 12 | Oct (peak) |
| 36 | Hackberry Emperor | Asterocampa celtis | Brush-footed Butterflies | 12 | Jul (past peak) |
| 37 | Field Crescent | Phyciodes pulchella | Brush-footed Butterflies | 12 | May (past peak) |
| 38 | Cloudless Sulphur | Phoebis sennae | Whites, Yellows, and Sulphurs | 11 | Aug (past peak) |
| 39 | Pearl Crescent | Phyciodes tharos | Brush-footed Butterflies | 11 | Aug (past peak) |
| 40 | Huron Skipper | Atalopedes huron | Skippers | 10 | Sep (past peak) |
| 41 | Hoary Comma | Polygonia gracilis | Brush-footed Butterflies | 9 | Jul (past peak) |
| 42 | Common Mestra | Mestra amymone | Brush-footed Butterflies | 9 | Oct (peak) |
| 43 | Common Checkered-Skipper | Burnsius communis | Skippers | 9 | Jul (past peak) |
| 44 | Gulf Fritillary | Dione vanillae | Brush-footed Butterflies | 8 | Jul (past peak) |
| 45 | Milbert's Tortoiseshell | Aglais milberti | Brush-footed Butterflies | 8 | Jul (past peak) |
| 46 | Goatweed Leafwing | Anaea andria | Brush-footed Butterflies | 8 | Aug (past peak) |
| 47 | Empress Leilia | Asterocampa leilia | Brush-footed Butterflies | 8 | Oct (peak) |
| 48 | Funereal Duskywing | Erynnis funeralis | Skippers | 7 | Jul (past peak) |
| 49 | Phaon Crescent | Phyciodes phaon | Brush-footed Butterflies | 6 | Sep (past peak) |
| 50 | Texan Crescent | Anthanassa texana | Brush-footed Butterflies | 6 | May (past peak) |