Butterflies Flying in Massachusetts in July (60 Species)

60 butterflies were recorded flying in Massachusetts in July in our iNaturalist sample; 29 of the top 50 are at their peak this month. The list is ranked by number of research-grade observations.

Apr May Jun Jul Aug Sep Oct Nov

Top butterflies in July

Monarch3,177 obs.

Silver-spotted Skipper1,353 obs.

Small White1,177 obs.

American Copper940 obs.

Red Admiral894 obs.

Spicebush Swallowtail782 obs.

Common Wood-Nymph672 obs.

Eastern Tiger Swallowtail642 obs.

American Lady571 obs.

Pearl Crescent495 obs.

Little Wood Satyr463 obs.

Gray Hairstreak451 obs.

All butterflies flying in Massachusetts in July

#	Species	Scientific name	Family	Obs.	Peak in state
1	Monarch	Danaus plexippus	Brush-footed Butterflies	3,177	Aug (rising)
2	Silver-spotted Skipper	Epargyreus clarus	Skippers	1,353	Jul (peak)
3	Small White	Pieris rapae	Whites, Yellows, and Sulphurs	1,177	Jul (peak)
4	American Copper	Lycaena hypophlaeas	Gossamer-winged Butterflies	940	Jul (peak)
5	Red Admiral	Vanessa atalanta	Brush-footed Butterflies	894	Jul (peak)
6	Spicebush Swallowtail	Papilio troilus	Swallowtails and Parnassians	782	Jul (peak)
7	Common Wood-Nymph	Cercyonis pegala	Brush-footed Butterflies	672	Jul (peak)
8	Eastern Tiger Swallowtail	Papilio glaucus	Swallowtails and Parnassians	642	Aug (rising)
9	American Lady	Vanessa virginiensis	Brush-footed Butterflies	571	Jul (peak)
10	Pearl Crescent	Phyciodes tharos	Brush-footed Butterflies	495	Jul (peak)
11	Little Wood Satyr	Megisto cymela	Brush-footed Butterflies	463	Jun (past peak)
12	Gray Hairstreak	Strymon melinus	Gossamer-winged Butterflies	451	Aug (rising)
13	Dun Skipper	Euphyes vestris	Skippers	446	Jul (peak)
14	Great Spangled Fritillary	Argynnis cybele	Brush-footed Butterflies	437	Jul (peak)
15	Northern Broken-Dash	Polites egeremet	Skippers	416	Jul (peak)
16	Eastern Tailed-Blue	Everes comyntas	Gossamer-winged Butterflies	413	Jul (peak)
17	Red-spotted Admiral	Limenitis arthemis	Brush-footed Butterflies	338	Jun (past peak)
18	Peck's Skipper	Polites peckius	Skippers	320	Aug (rising)
19	Appalachian Brown	Lethe appalachia	Brush-footed Butterflies	277	Jul (peak)
20	Banded Hairstreak	Satyrium calanus	Gossamer-winged Butterflies	263	Jul (peak)
21	Baltimore Checkerspot	Euphydryas phaeton	Brush-footed Butterflies	234	Jun (past peak)
22	Viceroy	Limenitis archippus	Brush-footed Butterflies	220	Jul (peak)
23	Question Mark	Polygonia interrogationis	Brush-footed Butterflies	207	Jul (peak)
24	Coral Hairstreak	Satyrium titus	Gossamer-winged Butterflies	206	Jul (peak)
25	Broad-winged Skipper	Poanes viator	Skippers	174	Jul (peak)
26	Wild Indigo Duskywing	Erynnis baptisiae	Skippers	173	Jul (peak)
27	Delaware Skipper	Anatrytone logan	Skippers	152	Jul (peak)
28	Clouded Sulphur	Colias philodice	Whites, Yellows, and Sulphurs	141	Sep (rising)
29	Mourning Cloak	Nymphalis antiopa	Brush-footed Butterflies	123	Apr (past peak)
30	Painted Lady	Vanessa cardui	Brush-footed Butterflies	116	Sep (rising)
31	Little Glassywing	Vernia verna	Skippers	114	Jul (peak)
32	Zabulon Skipper	Lon zabulon	Skippers	113	Aug (rising)
33	Orange Sulphur	Colias eurytheme	Whites, Yellows, and Sulphurs	110	Sep (rising)
34	Common Buckeye	Junonia coenia	Brush-footed Butterflies	109	Sep (rising)
35	Eastern Comma	Polygonia comma	Brush-footed Butterflies	103	Jul (peak)
36	Least Skipper	Ancyloxypha numitor	Skippers	101	Aug (rising)
37	Common Ringlet	Coenonympha california	Brush-footed Butterflies	100	Jun (past peak)
38	Huron Skipper	Atalopedes huron	Skippers	96	Sep (rising)
39	Summer Azure	Celastrina neglecta	Gossamer-winged Butterflies	87	Jul (peak)
40	Horace's Duskywing	Erynnis horatius	Skippers	84	Jul (peak)
41	Northern Pearly-eye	Lethe anthedon	Brush-footed Butterflies	76	Jul (peak)
42	American Silver-bordered Fritillary	Boloria myrina	Brush-footed Butterflies	73	Jul (peak)
43	Essex Skipper	Thymelicus lineola	Skippers	47	Jun (past peak)
44	Aphrodite Fritillary	Argynnis aphrodite	Brush-footed Butterflies	44	Jul (peak)
45	Tawny-edged Skipper	Polites themistocles	Skippers	39	Aug (rising)
46	Atlantis Fritillary	Argynnis atlantis	Brush-footed Butterflies	37	Jul (peak)
47	Long Dash	Limochores mystic	Skippers	36	Jun (past peak)
48	Harvester	Feniseca tarquinius	Gossamer-winged Butterflies	34	Aug (rising)
49	Common Sootywing	Pholisora catullus	Skippers	33	Jul (peak)
50	Eastern Giant Swallowtail	Heraclides cresphontes	Swallowtails and Parnassians	32	Aug (rising)