60 butterflies were recorded flying in Oregon in July in our iNaturalist sample; 31 of the top 50 are at their peak this month. The list is ranked by number of research-grade observations.
Top butterflies in July

California Tortoiseshell

Western Tiger Swallowtail
Lorquin's Admiral

Snowberry Checkerspot

Gray Hairstreak

Clodius Parnassian
Woodland Skipper

Painted Lady

Small White
Mylitta Crescent
Common Wood-Nymph

Hydaspe Fritillary
All butterflies flying in Oregon in July
| # | Species | Scientific name | Family | Obs. | Peak in state |
|---|---|---|---|---|---|
| 1 | California Tortoiseshell | Nymphalis californica | Brush-footed Butterflies | 1,200 | Jul (peak) |
| 2 | Western Tiger Swallowtail | Papilio rutulus | Swallowtails and Parnassians | 1,178 | Jul (peak) |
| 3 | Lorquin's Admiral | Limenitis lorquini | Brush-footed Butterflies | 921 | Jun (past peak) |
| 4 | Snowberry Checkerspot | Euphydryas colon | Brush-footed Butterflies | 659 | Jul (peak) |
| 5 | Gray Hairstreak | Strymon melinus | Gossamer-winged Butterflies | 641 | Jul (peak) |
| 6 | Clodius Parnassian | Parnassius clodius | Swallowtails and Parnassians | 622 | Jul (peak) |
| 7 | Woodland Skipper | Ochlodes sylvanoides | Skippers | 580 | Aug (rising) |
| 8 | Painted Lady | Vanessa cardui | Brush-footed Butterflies | 531 | Jul (peak) |
| 9 | Small White | Pieris rapae | Whites, Yellows, and Sulphurs | 483 | Jul (peak) |
| 10 | Mylitta Crescent | Phyciodes mylitta | Brush-footed Butterflies | 458 | Jul (peak) |
| 11 | Common Wood-Nymph | Cercyonis pegala | Brush-footed Butterflies | 426 | Jul (peak) |
| 12 | Hydaspe Fritillary | Argynnis hydaspe | Brush-footed Butterflies | 423 | Jul (peak) |
| 13 | Anna's Blue | Plebejus anna | Gossamer-winged Butterflies | 398 | Jul (peak) |
| 14 | Pale Swallowtail | Papilio eurymedon | Swallowtails and Parnassians | 387 | Jun (past peak) |
| 15 | Boisduval's Blue | Icaricia icarioides | Gossamer-winged Butterflies | 386 | Jul (peak) |
| 16 | Edith's Checkerspot | Euphydryas editha | Brush-footed Butterflies | 374 | Jul (peak) |
| 17 | Field Crescent | Phyciodes pulchella | Brush-footed Butterflies | 333 | Jul (peak) |
| 18 | Pacific Fritillary | Boloria epithore | Brush-footed Butterflies | 310 | Jun (past peak) |
| 19 | Echo Azure | Celastrina echo | Gossamer-winged Butterflies | 266 | Apr (past peak) |
| 20 | Orange Sulphur | Colias eurytheme | Whites, Yellows, and Sulphurs | 263 | Jul (peak) |
| 21 | Anise Swallowtail | Papilio zelicaon | Swallowtails and Parnassians | 246 | May (past peak) |
| 22 | Hoary Comma | Polygonia gracilis | Brush-footed Butterflies | 198 | Jul (peak) |
| 23 | California Sister | Adelpha californica | Brush-footed Butterflies | 191 | Sep (rising) |
| 24 | American Branded Skipper | Hesperia colorado | Skippers | 191 | Jul (peak) |
| 25 | Western White | Pontia occidentalis | Whites, Yellows, and Sulphurs | 180 | Jul (peak) |
| 26 | Greenish Blue | Icaricia saepiolus | Gossamer-winged Butterflies | 180 | Jun (past peak) |
| 27 | Blue Copper | Tharsalea heteronea | Gossamer-winged Butterflies | 180 | Jul (peak) |
| 28 | Dun Skipper | Euphyes vestris | Skippers | 179 | Jul (peak) |
| 29 | Red Admiral | Vanessa atalanta | Brush-footed Butterflies | 174 | Jul (peak) |
| 30 | Monarch | Danaus plexippus | Brush-footed Butterflies | 156 | Jun (past peak) |
| 31 | Margined White | Pieris marginalis | Whites, Yellows, and Sulphurs | 156 | Jul (peak) |
| 32 | Northern Checkerspot | Chlosyne palla | Brush-footed Butterflies | 152 | Jun (past peak) |
| 33 | Common Checkered-Skipper | Burnsius communis | Skippers | 135 | Jul (peak) |
| 34 | Silver-spotted Skipper | Epargyreus clarus | Skippers | 134 | Jun (past peak) |
| 35 | Callippe Fritillary | Argynnis callippe | Brush-footed Butterflies | 133 | Jul (peak) |
| 36 | Small Wood-Nymph | Cercyonis oetus | Brush-footed Butterflies | 121 | Jul (peak) |
| 37 | Hedgerow Hairstreak | Satyrium saepium | Gossamer-winged Butterflies | 118 | Jul (peak) |
| 38 | Silvery Blue | Glaucopsyche lygdamus | Gossamer-winged Butterflies | 117 | May (past peak) |
| 39 | Juniper Hairstreak | Callophrys gryneus | Gossamer-winged Butterflies | 112 | Jun (past peak) |
| 40 | Eastern Tailed-Blue | Everes comyntas | Gossamer-winged Butterflies | 110 | Jul (peak) |
| 41 | West Coast Lady | Vanessa annabella | Brush-footed Butterflies | 108 | May (past peak) |
| 42 | American Lady | Vanessa virginiensis | Brush-footed Butterflies | 107 | Aug (rising) |
| 43 | Pine White | Neophasia menapia | Whites, Yellows, and Sulphurs | 103 | Aug (rising) |
| 44 | Lupine Blue | Icaricia lupini | Gossamer-winged Butterflies | 96 | Jul (peak) |
| 45 | Two-tailed Swallowtail | Papilio multicaudata | Swallowtails and Parnassians | 94 | Jul (peak) |
| 46 | Becker's White | Pontia beckerii | Whites, Yellows, and Sulphurs | 88 | Jul (peak) |
| 47 | Great Spangled Fritillary | Argynnis cybele | Brush-footed Butterflies | 78 | Aug (rising) |
| 48 | Mourning Cloak | Nymphalis antiopa | Brush-footed Butterflies | 76 | Apr (past peak) |
| 49 | Purplish Copper | Tharsalea helloides | Gossamer-winged Butterflies | 76 | Jun (past peak) |
| 50 | Milbert's Tortoiseshell | Aglais milberti | Brush-footed Butterflies | 65 | Jul (peak) |