Butterflies Flying in Maryland in April (59 Species)

59 butterflies were recorded flying in Maryland in April in our iNaturalist sample; 10 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 April

Eastern Tiger Swallowtail1,001 obs.

Eastern Tailed-Blue871 obs.

Juvenal's Duskywing761 obs.

Zebra Swallowtail645 obs.

Pearl Crescent465 obs.

Small White422 obs.

Eastern Comma353 obs.

American Lady343 obs.

Falcate Orangetip340 obs.

Sleepy Duskywing312 obs.

Henry's Elfin266 obs.

Mourning Cloak211 obs.

All butterflies flying in Maryland in April

#	Species	Scientific name	Family	Obs.	Peak in state
1	Eastern Tiger Swallowtail	Papilio glaucus	Swallowtails and Parnassians	1,001	Aug (rising)
2	Eastern Tailed-Blue	Everes comyntas	Gossamer-winged Butterflies	871	Sep (rising)
3	Juvenal's Duskywing	Erynnis juvenalis	Skippers	761	Apr (peak)
4	Zebra Swallowtail	Eurytides marcellus	Swallowtails and Parnassians	645	Jun (rising)
5	Pearl Crescent	Phyciodes tharos	Brush-footed Butterflies	465	Sep (rising)
6	Small White	Pieris rapae	Whites, Yellows, and Sulphurs	422	Jun (rising)
7	Eastern Comma	Polygonia comma	Brush-footed Butterflies	353	Apr (peak)
8	American Lady	Vanessa virginiensis	Brush-footed Butterflies	343	May (rising)
9	Falcate Orangetip	Anthocharis midea	Whites, Yellows, and Sulphurs	340	Apr (peak)
10	Sleepy Duskywing	Erynnis brizo	Skippers	312	Apr (peak)
11	Henry's Elfin	Callophrys henrici	Gossamer-winged Butterflies	266	Apr (peak)
12	Mourning Cloak	Nymphalis antiopa	Brush-footed Butterflies	211	Mar (past peak)
13	Red Admiral	Vanessa atalanta	Brush-footed Butterflies	176	Jul (rising)
14	Spicebush Swallowtail	Papilio troilus	Swallowtails and Parnassians	172	Aug (rising)
15	Silver-spotted Skipper	Epargyreus clarus	Skippers	170	Aug (rising)
16	Silvery Blue	Glaucopsyche lygdamus	Gossamer-winged Butterflies	126	Apr (peak)
17	Eastern Pine Elfin	Callophrys niphon	Gossamer-winged Butterflies	102	Apr (peak)
18	Orange Sulphur	Colias eurytheme	Whites, Yellows, and Sulphurs	99	Sep (rising)
19	Question Mark	Polygonia interrogationis	Brush-footed Butterflies	96	Aug (rising)
20	Red-banded Hairstreak	Calycopis cecrops	Gossamer-winged Butterflies	90	Aug (rising)
21	Juniper Hairstreak	Callophrys gryneus	Gossamer-winged Butterflies	86	Apr (peak)
22	Monarch	Danaus plexippus	Brush-footed Butterflies	83	Aug (rising)
23	Black Swallowtail	Papilio polyxenes	Swallowtails and Parnassians	83	Aug (rising)
24	White M Hairstreak	Parrhasius m-album	Gossamer-winged Butterflies	68	Sep (rising)
25	Pipevine Swallowtail	Battus philenor	Swallowtails and Parnassians	61	Jul (rising)
26	Summer Azure	Celastrina neglecta	Gossamer-winged Butterflies	56	Jun (rising)
27	Gray Hairstreak	Strymon melinus	Gossamer-winged Butterflies	55	Sep (rising)
28	Brown Elfin	Callophrys augustinus	Gossamer-winged Butterflies	54	Apr (peak)
29	American Copper	Lycaena hypophlaeas	Gossamer-winged Butterflies	51	Jul (rising)
30	Spring Azure	Celastrina ladon	Gossamer-winged Butterflies	50	Apr (peak)
31	Wild Indigo Duskywing	Erynnis baptisiae	Skippers	48	Aug (rising)
32	Meadow Fritillary	Boloria bellona	Brush-footed Butterflies	41	Aug (rising)
33	Clouded Sulphur	Colias philodice	Whites, Yellows, and Sulphurs	36	Jul (rising)
34	Harvester	Feniseca tarquinius	Gossamer-winged Butterflies	29	Aug (rising)
35	Dreamy Duskywing	Erynnis icelus	Skippers	27	May (rising)
36	Horace's Duskywing	Erynnis horatius	Skippers	24	Jul (rising)
37	Variegated Fritillary	Euptoieta claudia	Brush-footed Butterflies	24	Sep (rising)
38	Painted Lady	Vanessa cardui	Brush-footed Butterflies	22	Sep (rising)
39	Silvery Checkerspot	Chlosyne nycteis	Brush-footed Butterflies	21	Jul (rising)
40	Red-spotted Admiral	Limenitis arthemis	Brush-footed Butterflies	16	Aug (rising)
41	Sleepy Orange	Eurema nicippe	Whites, Yellows, and Sulphurs	15	Aug (rising)
42	American Snout	Libytheana carinenta	Brush-footed Butterflies	12	Jul (rising)
43	Zabulon Skipper	Lon zabulon	Skippers	12	Aug (rising)
44	Common Checkered-Skipper	Burnsius communis	Skippers	11	Oct (rising)
45	Common Buckeye	Junonia coenia	Brush-footed Butterflies	8	Sep (rising)
46	Common Sootywing	Pholisora catullus	Skippers	7	Aug (rising)
47	Viceroy	Limenitis archippus	Brush-footed Butterflies	7	Aug (rising)
48	Great Purple Hairstreak	Atlides halesus	Gossamer-winged Butterflies	7	Jun (rising)
49	Huron Skipper	Atalopedes huron	Skippers	7	Sep (rising)
50	Cloudless Sulphur	Phoebis sennae	Whites, Yellows, and Sulphurs	3	Sep (rising)