Butterflies Flying in Maryland in August (60 Species)

60 butterflies were recorded flying in Maryland in August in our iNaturalist sample; 19 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 Dec

Top butterflies in August

Monarch4,747 obs.

Eastern Tiger Swallowtail4,452 obs.

Zabulon Skipper3,038 obs.

Huron Skipper2,504 obs.

Silver-spotted Skipper1,796 obs.

Spicebush Swallowtail1,615 obs.

Pearl Crescent1,353 obs.

Common Buckeye1,188 obs.

Black Swallowtail914 obs.

Variegated Fritillary901 obs.

Eastern Tailed-Blue830 obs.

Northern Pearly-eye744 obs.

All butterflies flying in Maryland in August

#	Species	Scientific name	Family	Obs.	Peak in state
1	Monarch	Danaus plexippus	Brush-footed Butterflies	4,747	Aug (peak)
2	Eastern Tiger Swallowtail	Papilio glaucus	Swallowtails and Parnassians	4,452	Aug (peak)
3	Zabulon Skipper	Lon zabulon	Skippers	3,038	Aug (peak)
4	Huron Skipper	Atalopedes huron	Skippers	2,504	Sep (rising)
5	Silver-spotted Skipper	Epargyreus clarus	Skippers	1,796	Aug (peak)
6	Spicebush Swallowtail	Papilio troilus	Swallowtails and Parnassians	1,615	Aug (peak)
7	Pearl Crescent	Phyciodes tharos	Brush-footed Butterflies	1,353	Sep (rising)
8	Common Buckeye	Junonia coenia	Brush-footed Butterflies	1,188	Sep (rising)
9	Black Swallowtail	Papilio polyxenes	Swallowtails and Parnassians	914	Aug (peak)
10	Variegated Fritillary	Euptoieta claudia	Brush-footed Butterflies	901	Sep (rising)
11	Eastern Tailed-Blue	Everes comyntas	Gossamer-winged Butterflies	830	Sep (rising)
12	Northern Pearly-eye	Lethe anthedon	Brush-footed Butterflies	744	Aug (peak)
13	Red-banded Hairstreak	Calycopis cecrops	Gossamer-winged Butterflies	702	Aug (peak)
14	Small White	Pieris rapae	Whites, Yellows, and Sulphurs	670	Jun (past peak)
15	Gray Hairstreak	Strymon melinus	Gossamer-winged Butterflies	536	Sep (rising)
16	Peck's Skipper	Polites peckius	Skippers	536	Sep (rising)
17	Red-spotted Admiral	Limenitis arthemis	Brush-footed Butterflies	532	Aug (peak)
18	Zebra Swallowtail	Eurytides marcellus	Swallowtails and Parnassians	512	Jun (past peak)
19	Red Admiral	Vanessa atalanta	Brush-footed Butterflies	460	Jul (past peak)
20	Least Skipper	Ancyloxypha numitor	Skippers	414	Jul (past peak)
21	Sleepy Orange	Eurema nicippe	Whites, Yellows, and Sulphurs	387	Aug (peak)
22	Summer Azure	Celastrina neglecta	Gossamer-winged Butterflies	366	Jun (past peak)
23	Little Glassywing	Vernia verna	Skippers	357	Jun (past peak)
24	Great Spangled Fritillary	Argynnis cybele	Brush-footed Butterflies	356	Jun (past peak)
25	Hackberry Emperor	Asterocampa celtis	Brush-footed Butterflies	325	Aug (peak)
26	Wild Indigo Duskywing	Erynnis baptisiae	Skippers	291	Aug (peak)
27	Fiery Skipper	Hylephila phyleus	Skippers	290	Sep (rising)
28	Question Mark	Polygonia interrogationis	Brush-footed Butterflies	287	Aug (peak)
29	Orange Sulphur	Colias eurytheme	Whites, Yellows, and Sulphurs	268	Sep (rising)
30	Eastern Comma	Polygonia comma	Brush-footed Butterflies	261	Apr (past peak)
31	Cloudless Sulphur	Phoebis sennae	Whites, Yellows, and Sulphurs	219	Sep (rising)
32	Silvery Checkerspot	Chlosyne nycteis	Brush-footed Butterflies	208	Jul (past peak)
33	Painted Lady	Vanessa cardui	Brush-footed Butterflies	207	Sep (rising)
34	Dun Skipper	Euphyes vestris	Skippers	187	Jul (past peak)
35	Viceroy	Limenitis archippus	Brush-footed Butterflies	185	Aug (peak)
36	American Lady	Vanessa virginiensis	Brush-footed Butterflies	172	May (past peak)
37	Horace's Duskywing	Erynnis horatius	Skippers	160	Jul (past peak)
38	Pipevine Swallowtail	Battus philenor	Swallowtails and Parnassians	145	Jul (past peak)
39	Common Wood-Nymph	Cercyonis pegala	Brush-footed Butterflies	145	Jul (past peak)
40	Appalachian Brown	Lethe appalachia	Brush-footed Butterflies	142	Jul (past peak)
41	Swarthy Skipper	Nastra lherminier	Skippers	113	Aug (peak)
42	Common Sootywing	Pholisora catullus	Skippers	110	Aug (peak)
43	Southern Broken-Dash	Polites otho	Skippers	107	Aug (peak)
44	Broad-winged Skipper	Poanes viator	Skippers	101	Jun (past peak)
45	Tawny-edged Skipper	Polites themistocles	Skippers	94	Aug (peak)
46	American Snout	Libytheana carinenta	Brush-footed Butterflies	93	Jul (past peak)
47	Meadow Fritillary	Boloria bellona	Brush-footed Butterflies	92	Aug (peak)
48	Clouded Sulphur	Colias philodice	Whites, Yellows, and Sulphurs	67	Jul (past peak)
49	Common Checkered-Skipper	Burnsius communis	Skippers	66	Oct (rising)
50	Tawny Emperor	Asterocampa clyton	Brush-footed Butterflies	65	Jul (past peak)