Butterflies Flying in Utah in October (53 Species)

53 butterflies were recorded flying in Utah in October in our iNaturalist sample; 5 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 Nov

Top butterflies in October

Western Pygmy-Blue198 obs.

Monarch119 obs.

Arizona Sister95 obs.

Painted Lady84 obs.

California Tortoiseshell68 obs.

Variegated Fritillary49 obs.

Common Checkered-Skipper42 obs.

Orange Sulphur40 obs.

Gray Buckeye35 obs.

Small White33 obs.

West Coast Lady31 obs.

Clouded Sulphur31 obs.

All butterflies flying in Utah in October

#	Species	Scientific name	Family	Obs.	Peak in state
1	Western Pygmy-Blue	Brephidium exilis	Gossamer-winged Butterflies	198	Oct (peak)
2	Monarch	Danaus plexippus	Brush-footed Butterflies	119	Aug (past peak)
3	Arizona Sister	Adelpha eulalia	Brush-footed Butterflies	95	Sep (past peak)
4	Painted Lady	Vanessa cardui	Brush-footed Butterflies	84	Apr (past peak)
5	California Tortoiseshell	Nymphalis californica	Brush-footed Butterflies	68	Jul (past peak)
6	Variegated Fritillary	Euptoieta claudia	Brush-footed Butterflies	49	Jun (past peak)
7	Common Checkered-Skipper	Burnsius communis	Skippers	42	Jul (past peak)
8	Orange Sulphur	Colias eurytheme	Whites, Yellows, and Sulphurs	40	Oct (peak)
9	Gray Buckeye	Junonia grisea	Brush-footed Butterflies	35	Oct (peak)
10	Small White	Pieris rapae	Whites, Yellows, and Sulphurs	33	Jun (past peak)
11	West Coast Lady	Vanessa annabella	Brush-footed Butterflies	31	May (past peak)
12	Clouded Sulphur	Colias philodice	Whites, Yellows, and Sulphurs	31	Sep (past peak)
13	Checkered White	Pontia protodice	Whites, Yellows, and Sulphurs	20	Jun (past peak)
14	Purplish Copper	Tharsalea helloides	Gossamer-winged Butterflies	17	Jul (past peak)
15	American Snout	Libytheana carinenta	Brush-footed Butterflies	16	Oct (peak)
16	Two-tailed Swallowtail	Papilio multicaudata	Swallowtails and Parnassians	16	Jun (past peak)
17	Fiery Skipper	Hylephila phyleus	Skippers	15	Sep (past peak)
18	Gray Hairstreak	Strymon melinus	Gossamer-winged Butterflies	15	Jul (past peak)
19	Mourning Cloak	Nymphalis antiopa	Brush-footed Butterflies	10	Apr (past peak)
20	Mylitta Crescent	Phyciodes mylitta	Brush-footed Butterflies	10	Jun (past peak)
21	Melissa Blue	Plebejus melissa	Gossamer-winged Butterflies	10	Jun (past peak)
22	Red Admiral	Vanessa atalanta	Brush-footed Butterflies	9	May (past peak)
23	Hoary Comma	Polygonia gracilis	Brush-footed Butterflies	8	Sep (past peak)
24	Milbert's Tortoiseshell	Aglais milberti	Brush-footed Butterflies	8	Jul (past peak)
25	Field Crescent	Phyciodes pulchella	Brush-footed Butterflies	6	May (past peak)
26	Juba Skipper	Hesperia juba	Skippers	6	May (past peak)
27	Marine Blue	Leptotes marina	Gossamer-winged Butterflies	5	Jul (past peak)
28	Sandhill Skipper	Polites sabuleti	Skippers	5	Aug (past peak)
29	Dainty Sulphur	Nathalis iole	Whites, Yellows, and Sulphurs	4	Jun (past peak)
30	Satyr Comma	Polygonia satyrus	Brush-footed Butterflies	4	Jun (past peak)
31	Northern White-Skipper	Heliopetes ericetorum	Skippers	4	Jun (past peak)
32	Ceraunus Blue	Hemiargus ceraunus	Gossamer-winged Butterflies	4	Sep (past peak)
33	Becker's White	Pontia beckerii	Whites, Yellows, and Sulphurs	3	May (past peak)
34	Western White	Pontia occidentalis	Whites, Yellows, and Sulphurs	3	Jun (past peak)
35	Coronis Fritillary	Argynnis coronis	Brush-footed Butterflies	3	Sep (past peak)
36	American Lady	Vanessa virginiensis	Brush-footed Butterflies	2	Jul (past peak)
37	Queen	Danaus gilippus	Brush-footed Butterflies	2	May (past peak)
38	Field Skipper	Atalopedes campestris	Skippers	2	Oct (peak)
39	Question Mark	Polygonia interrogationis	Brush-footed Butterflies	2	May (past peak)
40	Great Purple Hairstreak	Atlides halesus	Gossamer-winged Butterflies	2	May (past peak)
41	Woodland Skipper	Ochlodes sylvanoides	Skippers	2	Aug (past peak)
42	Lupine Blue	Icaricia lupini	Gossamer-winged Butterflies	2	Jul (past peak)
43	Western Tiger Swallowtail	Papilio rutulus	Swallowtails and Parnassians	1	Jun (past peak)
44	Anise Swallowtail	Papilio zelicaon	Swallowtails and Parnassians	1	May (past peak)
45	Echo Azure	Celastrina echo	Gossamer-winged Butterflies	1	May (past peak)
46	Western Tailed-blue	Everes amyntula	Gossamer-winged Butterflies	1	Jun (past peak)
47	Sleepy Orange	Eurema nicippe	Whites, Yellows, and Sulphurs	1	Sep (past peak)
48	California Patch	Chlosyne californica	Brush-footed Butterflies	1	Jun (past peak)
49	Weidemeyer's Admiral	Limenitis weidemeyerii	Brush-footed Butterflies	1	Jul (past peak)
50	Reakirt's Blue	Echinargus isola	Gossamer-winged Butterflies	1	Jul (past peak)