Butterflies Flying in Rhode Island in September (41 Species)

41 butterflies were recorded flying in Rhode Island in September in our iNaturalist sample; 11 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

Top butterflies in September

Monarch252 obs.

Huron Skipper157 obs.

Small White62 obs.

American Lady53 obs.

Common Buckeye46 obs.

Red-banded Hairstreak42 obs.

Painted Lady31 obs.

American Copper29 obs.

Eastern Tailed-Blue26 obs.

Zabulon Skipper24 obs.

Clouded Sulphur20 obs.

Red Admiral18 obs.

All butterflies flying in Rhode Island in September

#	Species	Scientific name	Family	Obs.	Peak in state
1	Monarch	Danaus plexippus	Brush-footed Butterflies	252	Aug (past peak)
2	Huron Skipper	Atalopedes huron	Skippers	157	Sep (peak)
3	Small White	Pieris rapae	Whites, Yellows, and Sulphurs	62	Jul (past peak)
4	American Lady	Vanessa virginiensis	Brush-footed Butterflies	53	Sep (peak)
5	Common Buckeye	Junonia coenia	Brush-footed Butterflies	46	Sep (peak)
6	Red-banded Hairstreak	Calycopis cecrops	Gossamer-winged Butterflies	42	Aug (past peak)
7	Painted Lady	Vanessa cardui	Brush-footed Butterflies	31	Sep (peak)
8	American Copper	Lycaena hypophlaeas	Gossamer-winged Butterflies	29	Jul (past peak)
9	Eastern Tailed-Blue	Everes comyntas	Gossamer-winged Butterflies	26	Sep (peak)
10	Zabulon Skipper	Lon zabulon	Skippers	24	Aug (past peak)
11	Clouded Sulphur	Colias philodice	Whites, Yellows, and Sulphurs	20	Sep (peak)
12	Red Admiral	Vanessa atalanta	Brush-footed Butterflies	18	Jul (past peak)
13	Pearl Crescent	Phyciodes tharos	Brush-footed Butterflies	18	Jul (past peak)
14	Gray Hairstreak	Strymon melinus	Gossamer-winged Butterflies	17	Aug (past peak)
15	Spicebush Swallowtail	Papilio troilus	Swallowtails and Parnassians	17	Aug (past peak)
16	Orange Sulphur	Colias eurytheme	Whites, Yellows, and Sulphurs	13	Oct (rising)
17	Mourning Cloak	Nymphalis antiopa	Brush-footed Butterflies	12	Apr (past peak)
18	Least Skipper	Ancyloxypha numitor	Skippers	12	Aug (past peak)
19	Question Mark	Polygonia interrogationis	Brush-footed Butterflies	9	Jul (past peak)
20	Viceroy	Limenitis archippus	Brush-footed Butterflies	9	Jul (past peak)
21	Eastern Tiger Swallowtail	Papilio glaucus	Swallowtails and Parnassians	9	Aug (past peak)
22	Common Wood-Nymph	Cercyonis pegala	Brush-footed Butterflies	8	Jul (past peak)
23	Cloudless Sulphur	Phoebis sennae	Whites, Yellows, and Sulphurs	7	Sep (peak)
24	Peck's Skipper	Polites peckius	Skippers	7	Aug (past peak)
25	White M Hairstreak	Parrhasius m-album	Gossamer-winged Butterflies	6	Sep (peak)
26	Wild Indigo Duskywing	Erynnis baptisiae	Skippers	5	Jul (past peak)
27	Great Spangled Fritillary	Argynnis cybele	Brush-footed Butterflies	5	Jul (past peak)
28	Pipevine Swallowtail	Battus philenor	Swallowtails and Parnassians	3	Jul (past peak)
29	Fiery Skipper	Hylephila phyleus	Skippers	3	Sep (peak)
30	Summer Azure	Celastrina neglecta	Gossamer-winged Butterflies	3	Aug (past peak)
31	Sleepy Orange	Eurema nicippe	Whites, Yellows, and Sulphurs	2	Sep (peak)
32	Silver-spotted Skipper	Epargyreus clarus	Skippers	2	Jul (past peak)
33	Appalachian Brown	Lethe appalachia	Brush-footed Butterflies	2	Jul (past peak)
34	Common Sootywing	Pholisora catullus	Skippers	1	Jun (past peak)
35	Broad-winged Skipper	Poanes viator	Skippers	1	Aug (past peak)
36	Black Swallowtail	Papilio polyxenes	Swallowtails and Parnassians	1	Jul (past peak)
37	Banded Hairstreak	Satyrium calanus	Gossamer-winged Butterflies	1	Jun (past peak)
38	Red-spotted Admiral	Limenitis arthemis	Brush-footed Butterflies	1	Jun (past peak)
39	Variegated Fritillary	Euptoieta claudia	Brush-footed Butterflies	1	Jul (past peak)
40	Milbert's Tortoiseshell	Aglais milberti	Brush-footed Butterflies	1	Sep (peak)
41	American Silver-bordered Fritillary	Boloria myrina	Brush-footed Butterflies	1	Aug (past peak)