BERKS COUNTY NATURE Home Page
Butterflies of Berks County, Pennsylvania
Sightings in 2004

The following butterfly species (those in bold) were seen in Berks County, Pennsylvania in 2004. There have been records of 106 species seen in Berks County. The list below includes all those reported in 2003 and 2004, a total of 73 species. No doubt other species were present, but not seen. Some of the 106 species are historical records and many are of strays or southern migrants which are not often found in the county. Ninety one of the one hundred six species are known to have been seen in the past 40 years. The most notable sightings this year were those of the Sleepy Orange, Zebra Swallowtail, Gray Comma and, Red-banded Hairstreak. The first two had not been recorded in decades. Since 1997 the following six species have been added to the Berks County list: Sachem (a skipper), Broad-winged Skipper, Horace's Duskywing (a skipper), Ocola Skipper, Gray Comma, and Red-banded Hairstreak.

Sightings in 2004    (63 species)  (63 species were also seen in 2003.) A total of 73 species have been seen in the two years.

Berks County, Pennsylvania - 2004

 Family HESPERIIDAE
1 Silver-spotted Skipper
2 Northern Cloudywing
3 Dreamy Duskywing
4 Sleepy Duskywing
5 Juvenal's Duskywing
6 Horace's Duskywing
7 Wild Indigo Duskywing
8 Checkered Skipper
9 Common Sootywing
10 Swarthy Skippper
11 Least Skipper
12 European Skipper
13 Fiery Skipper
14 Leonard's Skipper
15 Cobweb Skipper
16 Indian Skipper
17 Peck's Skipper
18 Tawny-edged Skipper
19 Crossline Skipper
20 Long Dash
21 Northern  Broken Dash
22 Little Glassy Wing
23 Sachem
24 Delaware Skipper
25 Hobomok Skipper
26 Zabulon Skipper
27 Broad-winged Skipper
28 Dun Skipper
29 Ocola Skipper
 Family PAPILIONIDAE
30 Pipevine Swallowtail
31 Zebra Swallowtail (First sighting in many years.)
32 Black Swallowtail
33 Tiger Swallowtail
34 Spicebush Swallowtail
35 Giant Swallowtail 
 Family PIERIDAE 
36 Cabbage Butterfly
37 Clouded Sulphur
38 Orange Sulphur
39 Sleepy Orange  (First sighting in many years.)

Family LYCAENIDAE
40 American Copper
41 Banded Hairstreak
42 Striped Hairstreak
43 Red-banded Hairstreak
44 Brown Elfin
45 Gray Hairstreak
46 Eastern Tailed Blue
47 Spring Azure
48 Summer Azure
49 Appalachian Azure
Family LIBYTHEIDAE
50 Snout Butterfly
 Family NYMPHALIDAE
51 Variegated Fritillary
52 Great Spangled Fritillary
53 Aphrodite
54 Meadow Fritillary
55 Pearl Crescent
56 Baltimore
57 Question Mark
58 Comma
59 Gray Comma  (First sighting in 5 years.)
60 Mourning Cloak
61 American Painted Lady
62 Painted Lady
63 Red Admiral
64 Buckeye
65 Red-spotted Purple
66 Viceroy
Subfamily APATURINAE
67 Hackberry Butterfly
68 Tawny Emperor
 Subfamily SATYRINAE
69 Northern Pearly Eye
70 Appalachian Eyed Brown
71 Little Wood Satyr
72 Common Wood Nymph
 Subfamily DANAINAE
73 Monarch
Past year butterfly species sightings in Berks County, PA
2003 (63)
2004 (63)
2005 (62)
2006 (61)
2007 (64)
2008 (67)
2009 (73)
2010 (80)
2011 (72)
2012 (78)
2013 (74)
No data
2015 (71)
2016 (61)
2017 (62)
(--)
.

A site with data on butterfly distributions by county for North America can be found at North American Butterflies. This government sponsored site is updated about once a year, although it is currently behind for many states. There is a small informal group of local butterfly collectors/observers in Berks Co. Pennsylvania If you are interested in butterflies and would like to meet this group, contact.

Return to Berks County Nature home page.