Butterflies Flying in Utah in May (60 Species)

60 butterflies were recorded flying in Utah in May in our iNaturalist sample; 12 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 May

Painted Lady419 obs.

Anise Swallowtail208 obs.

Two-tailed Swallowtail170 obs.

Mourning Cloak161 obs.

Small White145 obs.

Sagebrush Checkerspot128 obs.

California Tortoiseshell120 obs.

Juba Skipper118 obs.

Field Crescent91 obs.

Variegated Fritillary70 obs.

Checkered White67 obs.

Common Checkered-Skipper64 obs.

All butterflies flying in Utah in May

#	Species	Scientific name	Family	Obs.	Peak in state
1	Painted Lady	Vanessa cardui	Brush-footed Butterflies	419	Apr (past peak)
2	Anise Swallowtail	Papilio zelicaon	Swallowtails and Parnassians	208	May (peak)
3	Two-tailed Swallowtail	Papilio multicaudata	Swallowtails and Parnassians	170	Jun (rising)
4	Mourning Cloak	Nymphalis antiopa	Brush-footed Butterflies	161	Apr (past peak)
5	Small White	Pieris rapae	Whites, Yellows, and Sulphurs	145	Jun (rising)
6	Sagebrush Checkerspot	Chlosyne acastus	Brush-footed Butterflies	128	May (peak)
7	California Tortoiseshell	Nymphalis californica	Brush-footed Butterflies	120	Jul (rising)
8	Juba Skipper	Hesperia juba	Skippers	118	May (peak)
9	Field Crescent	Phyciodes pulchella	Brush-footed Butterflies	91	May (peak)
10	Variegated Fritillary	Euptoieta claudia	Brush-footed Butterflies	70	Jun (rising)
11	Checkered White	Pontia protodice	Whites, Yellows, and Sulphurs	67	Jun (rising)
12	Common Checkered-Skipper	Burnsius communis	Skippers	64	Jul (rising)
13	Western Tailed-blue	Everes amyntula	Gossamer-winged Butterflies	60	Jun (rising)
14	Juniper Hairstreak	Callophrys gryneus	Gossamer-winged Butterflies	56	Jun (rising)
15	Echo Azure	Celastrina echo	Gossamer-winged Butterflies	53	May (peak)
16	Silvery Blue	Glaucopsyche lygdamus	Gossamer-winged Butterflies	53	May (peak)
17	Melissa Blue	Plebejus melissa	Gossamer-winged Butterflies	52	Jun (rising)
18	Gray Hairstreak	Strymon melinus	Gossamer-winged Butterflies	47	Jul (rising)
19	Weidemeyer's Admiral	Limenitis weidemeyerii	Brush-footed Butterflies	42	Jul (rising)
20	Red Admiral	Vanessa atalanta	Brush-footed Butterflies	41	May (peak)
21	Mylitta Crescent	Phyciodes mylitta	Brush-footed Butterflies	41	Jun (rising)
22	West Coast Lady	Vanessa annabella	Brush-footed Butterflies	40	May (peak)
23	Arizona Sister	Adelpha eulalia	Brush-footed Butterflies	38	Sep (rising)
24	Western Tiger Swallowtail	Papilio rutulus	Swallowtails and Parnassians	37	Jun (rising)
25	Sleepy Duskywing	Erynnis brizo	Skippers	34	May (peak)
26	Monarch	Danaus plexippus	Brush-footed Butterflies	29	Aug (rising)
27	Boisduval's Blue	Icaricia icarioides	Gossamer-winged Butterflies	28	Jun (rising)
28	Sandhill Skipper	Polites sabuleti	Skippers	27	Aug (rising)
29	Becker's White	Pontia beckerii	Whites, Yellows, and Sulphurs	27	May (peak)
30	Pale Swallowtail	Papilio eurymedon	Swallowtails and Parnassians	26	Jun (rising)
31	Common Ringlet	Coenonympha california	Brush-footed Butterflies	26	Jun (rising)
32	Northern Crescent	Phyciodes cocyta	Brush-footed Butterflies	25	Jun (rising)
33	Gray Buckeye	Junonia grisea	Brush-footed Butterflies	24	Oct (rising)
34	Milbert's Tortoiseshell	Aglais milberti	Brush-footed Butterflies	22	Jul (rising)
35	Purplish Copper	Tharsalea helloides	Gossamer-winged Butterflies	21	Jul (rising)
36	Orange Sulphur	Colias eurytheme	Whites, Yellows, and Sulphurs	20	Oct (rising)
37	Hoary Comma	Polygonia gracilis	Brush-footed Butterflies	19	Sep (rising)
38	Marine Blue	Leptotes marina	Gossamer-winged Butterflies	19	Jul (rising)
39	Clouded Sulphur	Colias philodice	Whites, Yellows, and Sulphurs	15	Sep (rising)
40	Reakirt's Blue	Echinargus isola	Gossamer-winged Butterflies	15	Jul (rising)
41	Satyr Comma	Polygonia satyrus	Brush-footed Butterflies	14	Jun (rising)
42	Brown Elfin	Callophrys augustinus	Gossamer-winged Butterflies	14	May (peak)
43	Northern Cloudywing	Cecropterus pylades	Skippers	14	Jun (rising)
44	Queen	Danaus gilippus	Brush-footed Butterflies	13	May (peak)
45	Western Pygmy-Blue	Brephidium exilis	Gossamer-winged Butterflies	13	Oct (rising)
46	Dainty Sulphur	Nathalis iole	Whites, Yellows, and Sulphurs	12	Jun (rising)
47	Northern White-Skipper	Heliopetes ericetorum	Skippers	10	Jun (rising)
48	Western Pine Elfin	Callophrys eryphon	Gossamer-winged Butterflies	9	Jun (rising)
49	Greenish Blue	Icaricia saepiolus	Gossamer-winged Butterflies	9	Jun (rising)
50	Dreamy Duskywing	Erynnis icelus	Skippers	7	Jun (rising)