Butterflies Flying in Louisiana in September (60 Species)

60 butterflies were recorded flying in Louisiana in September in our iNaturalist sample; 9 of the top 50 are at their peak this month. The list is ranked by number of research-grade observations.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Top butterflies in September

Gulf Fritillary847 obs.

Eastern Giant Swallowtail349 obs.

Long-tailed Skipper336 obs.

Common Buckeye330 obs.

Monarch327 obs.

Viceroy265 obs.

Spicebush Swallowtail223 obs.

Fiery Skipper196 obs.

Cloudless Sulphur194 obs.

Pipevine Swallowtail173 obs.

Clouded Skipper164 obs.

Pearl Crescent163 obs.

All butterflies flying in Louisiana in September

#	Species	Scientific name	Family	Obs.	Peak in state
1	Gulf Fritillary	Dione vanillae	Brush-footed Butterflies	847	Oct (rising)
2	Eastern Giant Swallowtail	Heraclides cresphontes	Swallowtails and Parnassians	349	Sep (peak)
3	Long-tailed Skipper	Urbanus proteus	Skippers	336	Oct (rising)
4	Common Buckeye	Junonia coenia	Brush-footed Butterflies	330	Oct (rising)
5	Monarch	Danaus plexippus	Brush-footed Butterflies	327	Oct (rising)
6	Viceroy	Limenitis archippus	Brush-footed Butterflies	265	Sep (peak)
7	Spicebush Swallowtail	Papilio troilus	Swallowtails and Parnassians	223	Aug (past peak)
8	Fiery Skipper	Hylephila phyleus	Skippers	196	Oct (rising)
9	Cloudless Sulphur	Phoebis sennae	Whites, Yellows, and Sulphurs	194	Sep (peak)
10	Pipevine Swallowtail	Battus philenor	Swallowtails and Parnassians	173	Apr (past peak)
11	Clouded Skipper	Lerema accius	Skippers	164	Oct (rising)
12	Pearl Crescent	Phyciodes tharos	Brush-footed Butterflies	163	May (past peak)
13	Gray Hairstreak	Strymon melinus	Gossamer-winged Butterflies	161	Oct (rising)
14	Little Yellow	Eurema lisa	Whites, Yellows, and Sulphurs	158	Oct (rising)
15	Eastern Tiger Swallowtail	Papilio glaucus	Swallowtails and Parnassians	145	Aug (past peak)
16	Phaon Crescent	Phyciodes phaon	Brush-footed Butterflies	130	Oct (rising)
17	Tropical Checkered-Skipper	Burnsius oileus	Skippers	114	Sep (peak)
18	Tawny Emperor	Asterocampa clyton	Brush-footed Butterflies	112	Jul (past peak)
19	Red-banded Hairstreak	Calycopis cecrops	Gossamer-winged Butterflies	99	Mar (past peak)
20	Hackberry Emperor	Asterocampa celtis	Brush-footed Butterflies	95	Jun (past peak)
21	Ocola Skipper	Panoquina ocola	Skippers	94	Oct (rising)
22	Southern Broken-Dash	Polites otho	Skippers	92	Sep (peak)
23	Sleepy Orange	Eurema nicippe	Whites, Yellows, and Sulphurs	88	Sep (peak)
24	Silver-spotted Skipper	Epargyreus clarus	Skippers	81	Aug (past peak)
25	Question Mark	Polygonia interrogationis	Brush-footed Butterflies	77	Apr (past peak)
26	Painted Lady	Vanessa cardui	Brush-footed Butterflies	74	Sep (peak)
27	Carolina Satyr	Hermeuptychia sosybius	Brush-footed Butterflies	69	Mar (past peak)
28	Horace's Duskywing	Erynnis horatius	Skippers	68	Jul (past peak)
29	Dun Skipper	Euphyes vestris	Skippers	61	Aug (past peak)
30	Palamedes Swallowtail	Papilio palamedes	Swallowtails and Parnassians	54	Apr (past peak)
31	Variegated Fritillary	Euptoieta claudia	Brush-footed Butterflies	54	Oct (rising)
32	Red Admiral	Vanessa atalanta	Brush-footed Butterflies	37	Mar (past peak)
33	Silvery Checkerspot	Chlosyne nycteis	Brush-footed Butterflies	33	Jul (past peak)
34	Whirlabout	Hedone vibex	Skippers	30	Oct (rising)
35	Southern Skipperling	Oarisma minima	Skippers	29	Aug (past peak)
36	Goatweed Leafwing	Anaea andria	Brush-footed Butterflies	28	Mar (past peak)
37	Great Purple Hairstreak	Atlides halesus	Gossamer-winged Butterflies	26	Oct (rising)
38	Least Skipper	Ancyloxypha numitor	Skippers	24	Jul (past peak)
39	Southern Pearly-eye	Lethe portlandia	Brush-footed Butterflies	23	Mar (past peak)
40	Queen	Danaus gilippus	Brush-footed Butterflies	21	Aug (past peak)
41	Eastern Tailed-Blue	Everes comyntas	Gossamer-winged Butterflies	21	May (past peak)
42	Eastern Gemmed-Satyr	Cyllopsis gemma	Brush-footed Butterflies	18	Mar (past peak)
43	Delaware Skipper	Anatrytone logan	Skippers	17	Sep (peak)
44	Broad-winged Skipper	Poanes viator	Skippers	17	Apr (past peak)
45	Barred Yellow	Eurema daira	Whites, Yellows, and Sulphurs	17	Jul (past peak)
46	Common Wood-Nymph	Cercyonis pegala	Brush-footed Butterflies	16	Jun (past peak)
47	Salt Marsh Skipper	Panoquina panoquin	Skippers	16	Oct (rising)
48	Southern Dogface	Zerene cesonia	Whites, Yellows, and Sulphurs	16	Sep (peak)
49	Red-spotted Admiral	Limenitis arthemis	Brush-footed Butterflies	15	Aug (past peak)
50	Dainty Sulphur	Nathalis iole	Whites, Yellows, and Sulphurs	14	Oct (rising)