Butterflies Flying in Delaware in August (60 Species)

60 butterflies were recorded flying in Delaware in August in our iNaturalist sample; 20 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 August

Monarch562 obs.

Eastern Tiger Swallowtail485 obs.

Huron Skipper370 obs.

Zabulon Skipper330 obs.

Spicebush Swallowtail227 obs.

Silver-spotted Skipper226 obs.

Common Buckeye210 obs.

Variegated Fritillary168 obs.

Red-banded Hairstreak145 obs.

Pearl Crescent134 obs.

Eastern Tailed-Blue112 obs.

Red Admiral98 obs.

All butterflies flying in Delaware in August

#	Species	Scientific name	Family	Obs.	Peak in state
1	Monarch	Danaus plexippus	Brush-footed Butterflies	562	Aug (peak)
2	Eastern Tiger Swallowtail	Papilio glaucus	Swallowtails and Parnassians	485	Aug (peak)
3	Huron Skipper	Atalopedes huron	Skippers	370	Sep (rising)
4	Zabulon Skipper	Lon zabulon	Skippers	330	Aug (peak)
5	Spicebush Swallowtail	Papilio troilus	Swallowtails and Parnassians	227	Aug (peak)
6	Silver-spotted Skipper	Epargyreus clarus	Skippers	226	Aug (peak)
7	Common Buckeye	Junonia coenia	Brush-footed Butterflies	210	Sep (rising)
8	Variegated Fritillary	Euptoieta claudia	Brush-footed Butterflies	168	Sep (rising)
9	Red-banded Hairstreak	Calycopis cecrops	Gossamer-winged Butterflies	145	Aug (peak)
10	Pearl Crescent	Phyciodes tharos	Brush-footed Butterflies	134	Sep (rising)
11	Eastern Tailed-Blue	Everes comyntas	Gossamer-winged Butterflies	112	Sep (rising)
12	Red Admiral	Vanessa atalanta	Brush-footed Butterflies	98	Jul (past peak)
13	Gray Hairstreak	Strymon melinus	Gossamer-winged Butterflies	79	Sep (rising)
14	Small White	Pieris rapae	Whites, Yellows, and Sulphurs	79	Jun (past peak)
15	Red-spotted Admiral	Limenitis arthemis	Brush-footed Butterflies	77	Aug (peak)
16	Cloudless Sulphur	Phoebis sennae	Whites, Yellows, and Sulphurs	76	Aug (peak)
17	Pipevine Swallowtail	Battus philenor	Swallowtails and Parnassians	59	Aug (peak)
18	Broad-winged Skipper	Poanes viator	Skippers	50	Jul (past peak)
19	Sleepy Orange	Eurema nicippe	Whites, Yellows, and Sulphurs	49	Aug (peak)
20	American Lady	Vanessa virginiensis	Brush-footed Butterflies	48	Jun (past peak)
21	Least Skipper	Ancyloxypha numitor	Skippers	43	Jul (past peak)
22	Peck's Skipper	Polites peckius	Skippers	40	Sep (rising)
23	Painted Lady	Vanessa cardui	Brush-footed Butterflies	35	Sep (rising)
24	Question Mark	Polygonia interrogationis	Brush-footed Butterflies	35	Aug (peak)
25	Eastern Comma	Polygonia comma	Brush-footed Butterflies	33	Apr (past peak)
26	Orange Sulphur	Colias eurytheme	Whites, Yellows, and Sulphurs	29	Sep (rising)
27	Summer Azure	Celastrina neglecta	Gossamer-winged Butterflies	27	Jul (past peak)
28	Salt Marsh Skipper	Panoquina panoquin	Skippers	19	Aug (peak)
29	Zebra Swallowtail	Eurytides marcellus	Swallowtails and Parnassians	18	Jun (past peak)
30	Fiery Skipper	Hylephila phyleus	Skippers	16	Oct (rising)
31	Viceroy	Limenitis archippus	Brush-footed Butterflies	16	Sep (rising)
32	Horace's Duskywing	Erynnis horatius	Skippers	14	Jul (past peak)
33	Wild Indigo Duskywing	Erynnis baptisiae	Skippers	14	Aug (peak)
34	Common Wood-Nymph	Cercyonis pegala	Brush-footed Butterflies	10	Jul (past peak)
35	Appalachian Brown	Lethe appalachia	Brush-footed Butterflies	10	Jun (past peak)
36	Little Glassywing	Vernia verna	Skippers	10	Jun (past peak)
37	Black Swallowtail	Papilio polyxenes	Swallowtails and Parnassians	9	Sep (rising)
38	American Snout	Libytheana carinenta	Brush-footed Butterflies	9	Jul (past peak)
39	Great Spangled Fritillary	Argynnis cybele	Brush-footed Butterflies	9	Jun (past peak)
40	Common Sootywing	Pholisora catullus	Skippers	8	Aug (peak)
41	Harvester	Feniseca tarquinius	Gossamer-winged Butterflies	8	Aug (peak)
42	American Copper	Lycaena hypophlaeas	Gossamer-winged Butterflies	8	Sep (rising)
43	Common Checkered-Skipper	Burnsius communis	Skippers	7	Oct (rising)
44	Tawny Emperor	Asterocampa clyton	Brush-footed Butterflies	6	Sep (rising)
45	Eastern Giant Swallowtail	Heraclides cresphontes	Swallowtails and Parnassians	5	Aug (peak)
46	Swarthy Skipper	Nastra lherminier	Skippers	5	Aug (peak)
47	Northern Pearly-eye	Lethe anthedon	Brush-footed Butterflies	5	Aug (peak)
48	Tawny-edged Skipper	Polites themistocles	Skippers	4	Aug (peak)
49	Dun Skipper	Euphyes vestris	Skippers	4	Jun (past peak)
50	Hackberry Emperor	Asterocampa celtis	Brush-footed Butterflies	4	Aug (peak)