29 butterflies were recorded flying in Wyoming in October in our iNaturalist sample; 2 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
Common Checkered-Skipper
Variegated Fritillary
Clouded Sulphur
Small White
Mourning Cloak
California Tortoiseshell
Orange Sulphur
Juba Skipper
Red Admiral
West Coast Lady
All butterflies flying in Wyoming in October
| # | Species | Scientific name | Family | Obs. | Peak in state |
|---|---|---|---|---|---|
| 1 | Painted Lady | Vanessa cardui | Brush-footed Butterflies | 49 | Jul (past peak) |
| 2 | Monarch | Danaus plexippus | Brush-footed Butterflies | 33 | Aug (past peak) |
| 3 | Common Checkered-Skipper | Burnsius communis | Skippers | 18 | Aug (past peak) |
| 4 | Variegated Fritillary | Euptoieta claudia | Brush-footed Butterflies | 14 | Sep (past peak) |
| 5 | Clouded Sulphur | Colias philodice | Whites, Yellows, and Sulphurs | 10 | Jul (past peak) |
| 6 | Small White | Pieris rapae | Whites, Yellows, and Sulphurs | 8 | Jul (past peak) |
| 7 | Mourning Cloak | Nymphalis antiopa | Brush-footed Butterflies | 8 | Aug (past peak) |
| 8 | California Tortoiseshell | Nymphalis californica | Brush-footed Butterflies | 7 | Jul (past peak) |
| 9 | Orange Sulphur | Colias eurytheme | Whites, Yellows, and Sulphurs | 7 | Aug (past peak) |
| 10 | Juba Skipper | Hesperia juba | Skippers | 6 | Jun (past peak) |
| 11 | Red Admiral | Vanessa atalanta | Brush-footed Butterflies | 5 | Jun (past peak) |
| 12 | West Coast Lady | Vanessa annabella | Brush-footed Butterflies | 5 | Aug (past peak) |
| 13 | Western Pygmy-Blue | Brephidium exilis | Gossamer-winged Butterflies | 5 | Oct (peak) |
| 14 | Hoary Comma | Polygonia gracilis | Brush-footed Butterflies | 4 | Aug (past peak) |
| 15 | Dainty Sulphur | Nathalis iole | Whites, Yellows, and Sulphurs | 3 | Oct (peak) |
| 16 | Checkered White | Pontia protodice | Whites, Yellows, and Sulphurs | 3 | Jul (past peak) |
| 17 | Milbert's Tortoiseshell | Aglais milberti | Brush-footed Butterflies | 3 | Jul (past peak) |
| 18 | Green Comma | Polygonia faunus | Brush-footed Butterflies | 2 | Aug (past peak) |
| 19 | Two-tailed Swallowtail | Papilio multicaudata | Swallowtails and Parnassians | 2 | Jul (past peak) |
| 20 | Common Buckeye | Junonia coenia | Brush-footed Butterflies | 1 | Jul (past peak) |
| 21 | American Lady | Vanessa virginiensis | Brush-footed Butterflies | 1 | Sep (past peak) |
| 22 | Anise Swallowtail | Papilio zelicaon | Swallowtails and Parnassians | 1 | Jul (past peak) |
| 23 | Black Swallowtail | Papilio polyxenes | Swallowtails and Parnassians | 1 | Jul (past peak) |
| 24 | Marine Blue | Leptotes marina | Gossamer-winged Butterflies | 1 | Jul (past peak) |
| 25 | Rocky Mountain Parnassian | Parnassius smintheus | Swallowtails and Parnassians | 1 | Jul (past peak) |
| 26 | Pine White | Neophasia menapia | Whites, Yellows, and Sulphurs | 1 | Aug (past peak) |
| 27 | Melissa Blue | Plebejus melissa | Gossamer-winged Butterflies | 1 | Jul (past peak) |
| 28 | Boisduval's Blue | Icaricia icarioides | Gossamer-winged Butterflies | 1 | Jul (past peak) |
| 29 | Purplish Copper | Tharsalea helloides | Gossamer-winged Butterflies | 1 | Jul (past peak) |