20 butterflies were recorded flying in Wyoming in April in our iNaturalist sample; 0 of the top 50 are at their peak this month. The list is ranked by number of research-grade observations.
Top butterflies in April
Mourning Cloak
Painted Lady
Milbert's Tortoiseshell
California Tortoiseshell
Hoary Comma
Green Comma
Anise Swallowtail
Small White
Clouded Sulphur
Brown Elfin
Red Admiral
Echo Azure
All butterflies flying in Wyoming in April
| # | Species | Scientific name | Family | Obs. | Peak in state |
|---|---|---|---|---|---|
| 1 | Mourning Cloak | Nymphalis antiopa | Brush-footed Butterflies | 26 | Aug (rising) |
| 2 | Painted Lady | Vanessa cardui | Brush-footed Butterflies | 19 | Jul (rising) |
| 3 | Milbert's Tortoiseshell | Aglais milberti | Brush-footed Butterflies | 14 | Jul (rising) |
| 4 | California Tortoiseshell | Nymphalis californica | Brush-footed Butterflies | 9 | Jul (rising) |
| 5 | Hoary Comma | Polygonia gracilis | Brush-footed Butterflies | 9 | Aug (rising) |
| 6 | Green Comma | Polygonia faunus | Brush-footed Butterflies | 7 | Aug (rising) |
| 7 | Anise Swallowtail | Papilio zelicaon | Swallowtails and Parnassians | 6 | Jul (rising) |
| 8 | Small White | Pieris rapae | Whites, Yellows, and Sulphurs | 4 | Jul (rising) |
| 9 | Clouded Sulphur | Colias philodice | Whites, Yellows, and Sulphurs | 4 | Jul (rising) |
| 10 | Brown Elfin | Callophrys augustinus | Gossamer-winged Butterflies | 4 | May (rising) |
| 11 | Red Admiral | Vanessa atalanta | Brush-footed Butterflies | 3 | Jun (rising) |
| 12 | Echo Azure | Celastrina echo | Gossamer-winged Butterflies | 3 | Jun (rising) |
| 13 | Satyr Comma | Polygonia satyrus | Brush-footed Butterflies | 3 | Jun (rising) |
| 14 | Two-tailed Swallowtail | Papilio multicaudata | Swallowtails and Parnassians | 2 | Jul (rising) |
| 15 | Western Pine Elfin | Callophrys eryphon | Gossamer-winged Butterflies | 2 | Jun (rising) |
| 16 | Becker's White | Pontia beckerii | Whites, Yellows, and Sulphurs | 2 | Jul (rising) |
| 17 | Monarch | Danaus plexippus | Brush-footed Butterflies | 1 | Aug (rising) |
| 18 | Silvery Blue | Glaucopsyche lygdamus | Gossamer-winged Butterflies | 1 | Jun (rising) |
| 19 | Mylitta Crescent | Phyciodes mylitta | Brush-footed Butterflies | 1 | Jul (rising) |
| 20 | Juniper Hairstreak | Callophrys gryneus | Gossamer-winged Butterflies | 1 | May (rising) |