Butterflies Flying in Illinois in July (60 Species)

60 butterflies were recorded flying in Illinois in July in our iNaturalist sample; 21 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

Monarch5,320 obs.

Black Swallowtail2,363 obs.

Red Admiral2,159 obs.

Eastern Tiger Swallowtail2,146 obs.

Silver-spotted Skipper2,051 obs.

Pearl Crescent1,943 obs.

Eastern Tailed-Blue1,376 obs.

Common Buckeye1,372 obs.

Small White1,315 obs.

Pipevine Swallowtail1,146 obs.

Spicebush Swallowtail1,067 obs.

Question Mark882 obs.

All butterflies flying in Illinois in July

#	Species	Scientific name	Family	Obs.	Peak in state
1	Monarch	Danaus plexippus	Brush-footed Butterflies	5,320	Aug (rising)
2	Black Swallowtail	Papilio polyxenes	Swallowtails and Parnassians	2,363	Jul (peak)
3	Red Admiral	Vanessa atalanta	Brush-footed Butterflies	2,159	Jul (peak)
4	Eastern Tiger Swallowtail	Papilio glaucus	Swallowtails and Parnassians	2,146	Aug (rising)
5	Silver-spotted Skipper	Epargyreus clarus	Skippers	2,051	Jul (peak)
6	Pearl Crescent	Phyciodes tharos	Brush-footed Butterflies	1,943	Jul (peak)
7	Eastern Tailed-Blue	Everes comyntas	Gossamer-winged Butterflies	1,376	Jul (peak)
8	Common Buckeye	Junonia coenia	Brush-footed Butterflies	1,372	Aug (rising)
9	Small White	Pieris rapae	Whites, Yellows, and Sulphurs	1,315	Jul (peak)
10	Pipevine Swallowtail	Battus philenor	Swallowtails and Parnassians	1,146	Jul (peak)
11	Spicebush Swallowtail	Papilio troilus	Swallowtails and Parnassians	1,067	Jul (peak)
12	Question Mark	Polygonia interrogationis	Brush-footed Butterflies	882	Jul (peak)
13	Zabulon Skipper	Lon zabulon	Skippers	765	Aug (rising)
14	Peck's Skipper	Polites peckius	Skippers	750	Aug (rising)
15	Hackberry Emperor	Asterocampa celtis	Brush-footed Butterflies	737	Aug (rising)
16	Summer Azure	Celastrina neglecta	Gossamer-winged Butterflies	707	Jul (peak)
17	Orange Sulphur	Colias eurytheme	Whites, Yellows, and Sulphurs	677	Sep (rising)
18	Viceroy	Limenitis archippus	Brush-footed Butterflies	605	Aug (rising)
19	Eastern Giant Swallowtail	Heraclides cresphontes	Swallowtails and Parnassians	505	Jul (peak)
20	American Snout	Libytheana carinenta	Brush-footed Butterflies	502	Jul (peak)
21	Fiery Skipper	Hylephila phyleus	Skippers	469	Sep (rising)
22	Red-spotted Admiral	Limenitis arthemis	Brush-footed Butterflies	445	Aug (rising)
23	Painted Lady	Vanessa cardui	Brush-footed Butterflies	434	Sep (rising)
24	Eastern Comma	Polygonia comma	Brush-footed Butterflies	409	Jul (peak)
25	Wild Indigo Duskywing	Erynnis baptisiae	Skippers	330	Aug (rising)
26	Northern Pearly-eye	Lethe anthedon	Brush-footed Butterflies	327	Jul (peak)
27	Tawny-edged Skipper	Polites themistocles	Skippers	321	Aug (rising)
28	Silvery Checkerspot	Chlosyne nycteis	Brush-footed Butterflies	270	Jul (peak)
29	American Lady	Vanessa virginiensis	Brush-footed Butterflies	263	May (past peak)
30	Great Spangled Fritillary	Argynnis cybele	Brush-footed Butterflies	259	Jun (past peak)
31	Common Wood-Nymph	Cercyonis pegala	Brush-footed Butterflies	258	Jul (peak)
32	Least Skipper	Ancyloxypha numitor	Skippers	223	Aug (rising)
33	Variegated Fritillary	Euptoieta claudia	Brush-footed Butterflies	214	Sep (rising)
34	Banded Hairstreak	Satyrium calanus	Gossamer-winged Butterflies	210	Jun (past peak)
35	Little Yellow	Eurema lisa	Whites, Yellows, and Sulphurs	207	Jul (peak)
36	Little Wood Satyr	Megisto cymela	Brush-footed Butterflies	196	Jun (past peak)
37	Delaware Skipper	Anatrytone logan	Skippers	181	Jul (peak)
38	Common Sootywing	Pholisora catullus	Skippers	167	Aug (rising)
39	Cloudless Sulphur	Phoebis sennae	Whites, Yellows, and Sulphurs	166	Aug (rising)
40	Clouded Sulphur	Colias philodice	Whites, Yellows, and Sulphurs	149	Sep (rising)
41	Mourning Cloak	Nymphalis antiopa	Brush-footed Butterflies	140	Jun (past peak)
42	Northern Broken-Dash	Polites egeremet	Skippers	136	Jul (peak)
43	Zebra Swallowtail	Eurytides marcellus	Swallowtails and Parnassians	130	Apr (past peak)
44	Huron Skipper	Atalopedes huron	Skippers	126	Sep (rising)
45	Tawny Emperor	Asterocampa clyton	Brush-footed Butterflies	105	Aug (rising)
46	Appalachian Brown	Lethe appalachia	Brush-footed Butterflies	101	Jul (peak)
47	Dun Skipper	Euphyes vestris	Skippers	92	Jun (past peak)
48	Horace's Duskywing	Erynnis horatius	Skippers	91	Jul (peak)
49	Coral Hairstreak	Satyrium titus	Gossamer-winged Butterflies	85	Jun (past peak)
50	Meadow Fritillary	Boloria bellona	Brush-footed Butterflies	79	Jun (past peak)