Butterflies Flying in Oregon in May (60 Species)

60 butterflies were recorded flying in Oregon in May 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.

Mar Apr May Jun Jul Aug Sep Oct

Top butterflies in May

Common Ringlet426 obs.

Silvery Blue412 obs.

Painted Lady404 obs.

Echo Azure398 obs.

Lorquin's Admiral337 obs.

Anise Swallowtail319 obs.

Pale Swallowtail271 obs.

Propertius Duskywing263 obs.

Juniper Hairstreak243 obs.

Western Tiger Swallowtail234 obs.

California Tortoiseshell228 obs.

Gray Hairstreak221 obs.

All butterflies flying in Oregon in May

#	Species	Scientific name	Family	Obs.	Peak in state
1	Common Ringlet	Coenonympha california	Brush-footed Butterflies	426	May (peak)
2	Silvery Blue	Glaucopsyche lygdamus	Gossamer-winged Butterflies	412	May (peak)
3	Painted Lady	Vanessa cardui	Brush-footed Butterflies	404	Jul (rising)
4	Echo Azure	Celastrina echo	Gossamer-winged Butterflies	398	Apr (past peak)
5	Lorquin's Admiral	Limenitis lorquini	Brush-footed Butterflies	337	Jun (rising)
6	Anise Swallowtail	Papilio zelicaon	Swallowtails and Parnassians	319	May (peak)
7	Pale Swallowtail	Papilio eurymedon	Swallowtails and Parnassians	271	Jun (rising)
8	Propertius Duskywing	Erynnis propertius	Skippers	263	May (peak)
9	Juniper Hairstreak	Callophrys gryneus	Gossamer-winged Butterflies	243	Jun (rising)
10	Western Tiger Swallowtail	Papilio rutulus	Swallowtails and Parnassians	234	Jul (rising)
11	California Tortoiseshell	Nymphalis californica	Brush-footed Butterflies	228	Jul (rising)
12	Gray Hairstreak	Strymon melinus	Gossamer-winged Butterflies	221	Jul (rising)
13	Small White	Pieris rapae	Whites, Yellows, and Sulphurs	212	Jul (rising)
14	Boisduval's Blue	Icaricia icarioides	Gossamer-winged Butterflies	201	Jul (rising)
15	Western Pine Elfin	Callophrys eryphon	Gossamer-winged Butterflies	191	May (peak)
16	Mylitta Crescent	Phyciodes mylitta	Brush-footed Butterflies	188	Jul (rising)
17	Northern Checkerspot	Chlosyne palla	Brush-footed Butterflies	187	Jun (rising)
18	Juba Skipper	Hesperia juba	Skippers	170	May (peak)
19	Red Admiral	Vanessa atalanta	Brush-footed Butterflies	155	Jul (rising)
20	Brown Elfin	Callophrys augustinus	Gossamer-winged Butterflies	154	May (peak)
21	Margined White	Pieris marginalis	Whites, Yellows, and Sulphurs	154	Jul (rising)
22	West Coast Lady	Vanessa annabella	Brush-footed Butterflies	137	May (peak)
23	Mourning Cloak	Nymphalis antiopa	Brush-footed Butterflies	130	Apr (past peak)
24	Western Tailed-blue	Everes amyntula	Gossamer-winged Butterflies	113	Jun (rising)
25	Orange Sulphur	Colias eurytheme	Whites, Yellows, and Sulphurs	106	Jul (rising)
26	Pacific Fritillary	Boloria epithore	Brush-footed Butterflies	104	Jun (rising)
27	Snowberry Checkerspot	Euphydryas colon	Brush-footed Butterflies	104	Jul (rising)
28	Silver-spotted Skipper	Epargyreus clarus	Skippers	94	Jun (rising)
29	Common Checkered-Skipper	Burnsius communis	Skippers	93	Jul (rising)
30	Eastern Tailed-Blue	Everes comyntas	Gossamer-winged Butterflies	85	Jul (rising)
31	Hoary Comma	Polygonia gracilis	Brush-footed Butterflies	75	Jul (rising)
32	Lotus Hairstreak	Callophrys dumetorum	Gossamer-winged Butterflies	72	May (peak)
33	Field Crescent	Phyciodes pulchella	Brush-footed Butterflies	65	Jul (rising)
34	Greenish Blue	Icaricia saepiolus	Gossamer-winged Butterflies	64	Jun (rising)
35	Satyr Comma	Polygonia satyrus	Brush-footed Butterflies	62	Jul (rising)
36	Green Comma	Polygonia faunus	Brush-footed Butterflies	59	Aug (rising)
37	Acmon Blue	Icaricia acmon	Gossamer-winged Butterflies	50	Aug (rising)
38	Sagebrush Checkerspot	Chlosyne acastus	Brush-footed Butterflies	49	May (peak)
39	Two-tailed Swallowtail	Papilio multicaudata	Swallowtails and Parnassians	47	Jul (rising)
40	California Sister	Adelpha californica	Brush-footed Butterflies	43	Sep (rising)
41	Northern Cloudywing	Cecropterus pylades	Skippers	43	Jun (rising)
42	Dreamy Duskywing	Erynnis icelus	Skippers	42	Jun (rising)
43	Edith's Checkerspot	Euphydryas editha	Brush-footed Butterflies	42	Jul (rising)
44	Clodius Parnassian	Parnassius clodius	Swallowtails and Parnassians	41	Jul (rising)
45	Purplish Copper	Tharsalea helloides	Gossamer-winged Butterflies	40	Jun (rising)
46	Becker's White	Pontia beckerii	Whites, Yellows, and Sulphurs	38	Jul (rising)
47	Variable Checkerspot	Euphydryas chalcedona	Brush-footed Butterflies	37	Jun (rising)
48	Western White	Pontia occidentalis	Whites, Yellows, and Sulphurs	36	Jul (rising)
49	Field Skipper	Atalopedes campestris	Skippers	30	Sep (rising)
50	Milbert's Tortoiseshell	Aglais milberti	Brush-footed Butterflies	24	Jul (rising)