Butterflies Flying in Oregon in October (46 Species)

46 butterflies were recorded flying in Oregon in October 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.

Mar Apr May Jun Jul Aug Sep Oct

Top butterflies in October

California Tortoiseshell197 obs.

American Lady106 obs.

Field Skipper105 obs.

California Sister91 obs.

Orange Sulphur83 obs.

Small White77 obs.

Gray Buckeye65 obs.

Mylitta Crescent54 obs.

Monarch27 obs.

Red Admiral25 obs.

Common Checkered-Skipper25 obs.

Anise Swallowtail24 obs.

All butterflies flying in Oregon in October

#	Species	Scientific name	Family	Obs.	Peak in state
1	California Tortoiseshell	Nymphalis californica	Brush-footed Butterflies	197	Jul (past peak)
2	American Lady	Vanessa virginiensis	Brush-footed Butterflies	106	Aug (past peak)
3	Field Skipper	Atalopedes campestris	Skippers	105	Sep (past peak)
4	California Sister	Adelpha californica	Brush-footed Butterflies	91	Sep (past peak)
5	Orange Sulphur	Colias eurytheme	Whites, Yellows, and Sulphurs	83	Jul (past peak)
6	Small White	Pieris rapae	Whites, Yellows, and Sulphurs	77	Jul (past peak)
7	Gray Buckeye	Junonia grisea	Brush-footed Butterflies	65	Sep (past peak)
8	Mylitta Crescent	Phyciodes mylitta	Brush-footed Butterflies	54	Jul (past peak)
9	Monarch	Danaus plexippus	Brush-footed Butterflies	27	Jun (past peak)
10	Red Admiral	Vanessa atalanta	Brush-footed Butterflies	25	Jul (past peak)
11	Common Checkered-Skipper	Burnsius communis	Skippers	25	Jul (past peak)
12	Anise Swallowtail	Papilio zelicaon	Swallowtails and Parnassians	24	May (past peak)
13	Painted Lady	Vanessa cardui	Brush-footed Butterflies	22	Jul (past peak)
14	Acmon Blue	Icaricia acmon	Gossamer-winged Butterflies	21	Aug (past peak)
15	Lorquin's Admiral	Limenitis lorquini	Brush-footed Butterflies	19	Jun (past peak)
16	Woodland Skipper	Ochlodes sylvanoides	Skippers	19	Aug (past peak)
17	Common Ringlet	Coenonympha california	Brush-footed Butterflies	17	May (past peak)
18	Purplish Copper	Tharsalea helloides	Gossamer-winged Butterflies	17	Jun (past peak)
19	West Coast Lady	Vanessa annabella	Brush-footed Butterflies	14	May (past peak)
20	Hoary Comma	Polygonia gracilis	Brush-footed Butterflies	10	Jul (past peak)
21	Western Tiger Swallowtail	Papilio rutulus	Swallowtails and Parnassians	9	Jul (past peak)
22	Western Pygmy-Blue	Brephidium exilis	Gossamer-winged Butterflies	8	Sep (past peak)
23	Gray Hairstreak	Strymon melinus	Gossamer-winged Butterflies	7	Jul (past peak)
24	Eastern Tailed-Blue	Everes comyntas	Gossamer-winged Butterflies	7	Jul (past peak)
25	Clouded Sulphur	Colias philodice	Whites, Yellows, and Sulphurs	6	Sep (past peak)
26	Mourning Cloak	Nymphalis antiopa	Brush-footed Butterflies	5	Apr (past peak)
27	Two-tailed Swallowtail	Papilio multicaudata	Swallowtails and Parnassians	4	Jul (past peak)
28	Western White	Pontia occidentalis	Whites, Yellows, and Sulphurs	4	Jul (past peak)
29	Hydaspe Fritillary	Argynnis hydaspe	Brush-footed Butterflies	4	Jul (past peak)
30	Echo Azure	Celastrina echo	Gossamer-winged Butterflies	3	Apr (past peak)
31	Green Comma	Polygonia faunus	Brush-footed Butterflies	3	Aug (past peak)
32	Milbert's Tortoiseshell	Aglais milberti	Brush-footed Butterflies	3	Jul (past peak)
33	Pine White	Neophasia menapia	Whites, Yellows, and Sulphurs	3	Aug (past peak)
34	Juba Skipper	Hesperia juba	Skippers	3	May (past peak)
35	Becker's White	Pontia beckerii	Whites, Yellows, and Sulphurs	3	Jul (past peak)
36	Northern White-Skipper	Heliopetes ericetorum	Skippers	2	Jun (past peak)
37	American Branded Skipper	Hesperia colorado	Skippers	2	Jul (past peak)
38	Silvery Blue	Glaucopsyche lygdamus	Gossamer-winged Butterflies	1	May (past peak)
39	Viceroy	Limenitis archippus	Brush-footed Butterflies	1	Aug (past peak)
40	Checkered White	Pontia protodice	Whites, Yellows, and Sulphurs	1	Jul (past peak)
41	Snowberry Checkerspot	Euphydryas colon	Brush-footed Butterflies	1	Jul (past peak)
42	Field Crescent	Phyciodes pulchella	Brush-footed Butterflies	1	Jul (past peak)
43	Margined White	Pieris marginalis	Whites, Yellows, and Sulphurs	1	Jul (past peak)
44	Lupine Blue	Icaricia lupini	Gossamer-winged Butterflies	1	Jul (past peak)
45	Anna's Blue	Plebejus anna	Gossamer-winged Butterflies	1	Jul (past peak)
46	Coronis Fritillary	Argynnis coronis	Brush-footed Butterflies	1	Jul (past peak)