Butterflies Flying in Colorado in July (60 Species)

60 butterflies were recorded flying in Colorado in July in our iNaturalist sample; 26 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 July

Weidemeyer's Admiral1,143 obs.

Two-tailed Swallowtail987 obs.

Taxiles Skipper974 obs.

Rocky Mountain Parnassian741 obs.

Monarch623 obs.

Variegated Fritillary587 obs.

Western Tiger Swallowtail581 obs.

Painted Lady561 obs.

Small White524 obs.

Common Checkered-Skipper459 obs.

Checkered White424 obs.

Reakirt's Blue312 obs.

All butterflies flying in Colorado in July

#	Species	Scientific name	Family	Obs.	Peak in state
1	Weidemeyer's Admiral	Limenitis weidemeyerii	Brush-footed Butterflies	1,143	Jul (peak)
2	Two-tailed Swallowtail	Papilio multicaudata	Swallowtails and Parnassians	987	Jul (peak)
3	Taxiles Skipper	Lon taxiles	Skippers	974	Jul (peak)
4	Rocky Mountain Parnassian	Parnassius smintheus	Swallowtails and Parnassians	741	Jul (peak)
5	Monarch	Danaus plexippus	Brush-footed Butterflies	623	Sep (rising)
6	Variegated Fritillary	Euptoieta claudia	Brush-footed Butterflies	587	Jul (peak)
7	Western Tiger Swallowtail	Papilio rutulus	Swallowtails and Parnassians	581	Jun (past peak)
8	Painted Lady	Vanessa cardui	Brush-footed Butterflies	561	Sep (rising)
9	Small White	Pieris rapae	Whites, Yellows, and Sulphurs	524	Jul (peak)
10	Common Checkered-Skipper	Burnsius communis	Skippers	459	Aug (rising)
11	Checkered White	Pontia protodice	Whites, Yellows, and Sulphurs	424	Jul (peak)
12	Reakirt's Blue	Echinargus isola	Gossamer-winged Butterflies	312	Jul (peak)
13	Small Wood-Nymph	Cercyonis oetus	Brush-footed Butterflies	307	Jul (peak)
14	Greenish Blue	Icaricia saepiolus	Gossamer-winged Butterflies	306	Jul (peak)
15	Red Admiral	Vanessa atalanta	Brush-footed Butterflies	305	Jun (past peak)
16	Boisduval's Blue	Icaricia icarioides	Gossamer-winged Butterflies	301	Jul (peak)
17	Margined White	Pieris marginalis	Whites, Yellows, and Sulphurs	284	Jul (peak)
18	Gray Hairstreak	Strymon melinus	Gossamer-winged Butterflies	279	Aug (rising)
19	Anise Swallowtail	Papilio zelicaon	Swallowtails and Parnassians	248	Jun (past peak)
20	Orange Sulphur	Colias eurytheme	Whites, Yellows, and Sulphurs	248	Jul (peak)
21	Mourning Cloak	Nymphalis antiopa	Brush-footed Butterflies	245	Apr (past peak)
22	Aphrodite Fritillary	Argynnis aphrodite	Brush-footed Butterflies	243	Jul (peak)
23	Black Swallowtail	Papilio polyxenes	Swallowtails and Parnassians	240	Jul (peak)
24	Silver-spotted Skipper	Epargyreus clarus	Skippers	240	Jun (past peak)
25	Hoary Comma	Polygonia gracilis	Brush-footed Butterflies	238	Jul (peak)
26	Common Wood-Nymph	Cercyonis pegala	Brush-footed Butterflies	230	Jul (peak)
27	Melissa Blue	Plebejus melissa	Gossamer-winged Butterflies	208	Jul (peak)
28	Blue Copper	Tharsalea heteronea	Gossamer-winged Butterflies	207	Jul (peak)
29	Milbert's Tortoiseshell	Aglais milberti	Brush-footed Butterflies	189	Jul (peak)
30	Woodland Skipper	Ochlodes sylvanoides	Skippers	187	Aug (rising)
31	Dun Skipper	Euphyes vestris	Skippers	181	Jul (peak)
32	Common Ringlet	Coenonympha california	Brush-footed Butterflies	172	Jun (past peak)
33	Mormon Fritillary	Argynnis mormonia	Brush-footed Butterflies	165	Aug (rising)
34	Northern Checkerspot	Chlosyne palla	Brush-footed Butterflies	160	Jul (peak)
35	Pale Swallowtail	Papilio eurymedon	Swallowtails and Parnassians	146	Jun (past peak)
36	Dainty Sulphur	Nathalis iole	Whites, Yellows, and Sulphurs	141	Oct (rising)
37	Northern Crescent	Phyciodes cocyta	Brush-footed Butterflies	134	Jun (past peak)
38	Lupine Blue	Icaricia lupini	Gossamer-winged Butterflies	130	Jul (peak)
39	Field Crescent	Phyciodes pulchella	Brush-footed Butterflies	114	May (past peak)
40	Silvery Checkerspot	Chlosyne nycteis	Brush-footed Butterflies	96	Jul (peak)
41	Silvery Blue	Glaucopsyche lygdamus	Gossamer-winged Butterflies	88	Jun (past peak)
42	Juniper Hairstreak	Callophrys gryneus	Gossamer-winged Butterflies	86	Jun (past peak)
43	Western Tailed-blue	Everes amyntula	Gossamer-winged Butterflies	84	Jun (past peak)
44	Delaware Skipper	Anatrytone logan	Skippers	79	Jul (peak)
45	Queen	Danaus gilippus	Brush-footed Butterflies	75	Sep (rising)
46	Coral Hairstreak	Satyrium titus	Gossamer-winged Butterflies	72	Jul (peak)
47	Viceroy	Limenitis archippus	Brush-footed Butterflies	68	Aug (rising)
48	Common Sootywing	Pholisora catullus	Skippers	66	Jun (past peak)
49	American Lady	Vanessa virginiensis	Brush-footed Butterflies	62	Oct (rising)
50	Purplish Copper	Tharsalea helloides	Gossamer-winged Butterflies	62	Sep (rising)