Butterflies Flying in Washington in August (60 Species)

60 butterflies were recorded flying in Washington in August in our iNaturalist sample; 14 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 August

Woodland Skipper2,903 obs.

Anna's Blue543 obs.

Small White536 obs.

Lorquin's Admiral462 obs.

Hydaspe Fritillary424 obs.

Mormon Fritillary341 obs.

California Tortoiseshell329 obs.

Purplish Copper297 obs.

Pine White288 obs.

Gray Hairstreak266 obs.

Snowberry Checkerspot256 obs.

Common Wood-Nymph228 obs.

All butterflies flying in Washington in August

#	Species	Scientific name	Family	Obs.	Peak in state
1	Woodland Skipper	Ochlodes sylvanoides	Skippers	2,903	Aug (peak)
2	Anna's Blue	Plebejus anna	Gossamer-winged Butterflies	543	Aug (peak)
3	Small White	Pieris rapae	Whites, Yellows, and Sulphurs	536	Jul (past peak)
4	Lorquin's Admiral	Limenitis lorquini	Brush-footed Butterflies	462	Jun (past peak)
5	Hydaspe Fritillary	Argynnis hydaspe	Brush-footed Butterflies	424	Aug (peak)
6	Mormon Fritillary	Argynnis mormonia	Brush-footed Butterflies	341	Aug (peak)
7	California Tortoiseshell	Nymphalis californica	Brush-footed Butterflies	329	Jul (past peak)
8	Purplish Copper	Tharsalea helloides	Gossamer-winged Butterflies	297	Aug (peak)
9	Pine White	Neophasia menapia	Whites, Yellows, and Sulphurs	288	Aug (peak)
10	Gray Hairstreak	Strymon melinus	Gossamer-winged Butterflies	266	Aug (peak)
11	Snowberry Checkerspot	Euphydryas colon	Brush-footed Butterflies	256	Jul (past peak)
12	Common Wood-Nymph	Cercyonis pegala	Brush-footed Butterflies	228	Jul (past peak)
13	Clodius Parnassian	Parnassius clodius	Swallowtails and Parnassians	222	Jul (past peak)
14	Edith's Checkerspot	Euphydryas editha	Brush-footed Butterflies	174	Jul (past peak)
15	Anise Swallowtail	Papilio zelicaon	Swallowtails and Parnassians	168	Jul (past peak)
16	Western Tiger Swallowtail	Papilio rutulus	Swallowtails and Parnassians	152	Jun (past peak)
17	Boisduval's Blue	Icaricia icarioides	Gossamer-winged Butterflies	147	May (past peak)
18	Mylitta Crescent	Phyciodes mylitta	Brush-footed Butterflies	136	Jul (past peak)
19	Green Comma	Polygonia faunus	Brush-footed Butterflies	129	Sep (rising)
20	Painted Lady	Vanessa cardui	Brush-footed Butterflies	126	May (past peak)
21	Red Admiral	Vanessa atalanta	Brush-footed Butterflies	126	Jul (past peak)
22	Field Crescent	Phyciodes pulchella	Brush-footed Butterflies	123	Jul (past peak)
23	Rocky Mountain Parnassian	Parnassius smintheus	Swallowtails and Parnassians	116	Aug (peak)
24	Hoary Comma	Polygonia gracilis	Brush-footed Butterflies	114	Aug (peak)
25	Margined White	Pieris marginalis	Whites, Yellows, and Sulphurs	110	Jul (past peak)
26	Field Skipper	Atalopedes campestris	Skippers	109	Sep (rising)
27	American Branded Skipper	Hesperia colorado	Skippers	102	Aug (peak)
28	Pacific Fritillary	Boloria epithore	Brush-footed Butterflies	97	Jul (past peak)
29	Common Ringlet	Coenonympha california	Brush-footed Butterflies	91	May (past peak)
30	Coronis Fritillary	Argynnis coronis	Brush-footed Butterflies	86	Jul (past peak)
31	Satyr Comma	Polygonia satyrus	Brush-footed Butterflies	85	Apr (past peak)
32	Orange Sulphur	Colias eurytheme	Whites, Yellows, and Sulphurs	82	Sep (rising)
33	Great Spangled Fritillary	Argynnis cybele	Brush-footed Butterflies	73	Jul (past peak)
34	Common Checkered-Skipper	Burnsius communis	Skippers	70	Jul (past peak)
35	Sandhill Skipper	Polites sabuleti	Skippers	68	Aug (peak)
36	Western White	Pontia occidentalis	Whites, Yellows, and Sulphurs	63	Jul (past peak)
37	Mourning Cloak	Nymphalis antiopa	Brush-footed Butterflies	57	Apr (past peak)
38	Milbert's Tortoiseshell	Aglais milberti	Brush-footed Butterflies	52	Jul (past peak)
39	Viceroy	Limenitis archippus	Brush-footed Butterflies	41	Aug (peak)
40	Two-tailed Swallowtail	Papilio multicaudata	Swallowtails and Parnassians	41	Jul (past peak)
41	Monarch	Danaus plexippus	Brush-footed Butterflies	40	Aug (peak)
42	Acmon Blue	Icaricia acmon	Gossamer-winged Butterflies	34	May (past peak)
43	Small Wood-Nymph	Cercyonis oetus	Brush-footed Butterflies	33	Jul (past peak)
44	Melissa Blue	Plebejus melissa	Gossamer-winged Butterflies	33	Jun (past peak)
45	Blue Copper	Tharsalea heteronea	Gossamer-winged Butterflies	29	Jun (past peak)
46	Becker's White	Pontia beckerii	Whites, Yellows, and Sulphurs	28	Jul (past peak)
47	West Coast Lady	Vanessa annabella	Brush-footed Butterflies	23	May (past peak)
48	Juba Skipper	Hesperia juba	Skippers	23	May (past peak)
49	Pale Swallowtail	Papilio eurymedon	Swallowtails and Parnassians	21	Jun (past peak)
50	Clouded Sulphur	Colias philodice	Whites, Yellows, and Sulphurs	20	Aug (peak)