Butterflies of Berks County, Pennsylvania ---- Sightings in 2010
Photos (34) of Berks Butterflies - 2010

Butterfly walks in Berks County - 2010

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    The butterfly species in bold have been seen in Berks County, Pennsylvania in 2010. There are records of 108 species for Berks County. The list below includes all those reported from 2003 through 2009, a total of 87 species. New species (not seen during 2003 - 2009) will be added in red

     No doubt other species will be present, but not seen. Some of the 108 species are historical records and many are of strays not often found in the county. Ninety seven (as of 2010 ninety eight) of the one hundred eight species are known to have been seen in the past 40 years. Two species were added to this list in 2009. 
If you have a reliable sighting not on this list for 2010, please send an email to. We'd like your help. 

Sightings in 2010 (80)  --- Updated 9/12/10
     (Latest: White-m Hairstreak, Harvester, Zebra Swallowtail, N. Pearly Eye, Giant Swallowtail, Painted Lady)

  Berks County, Pennsylvania - 2010

 Family HESPERIIDAE
1 Silver-spotted Skipper      4/23
2 Long-tailed Skipper 
3 Hoary Edge                          5/13
4 Northern Cloudywing        5/13
5 Dreamy Duskywing           4/24
6 Sleepy Duskywing              4/2
7 Juvenal's Duskywing        4/15
8 Horace's Duskywing           7/18
9 Wild Indigo Duskywing    4/22
10 Checkered Skipper           8/6
11 Common Sootywing         7/23
12 Swarthy Skipper              5/27
13 Least Skipper                   6/5
14 European Skipper           6/19
15 Fiery Skipper                   7/30
16 Leonard's Skipper 
17 Cobweb Skipper 
18 Indian Skipper 
19 Peck's Skipper                 5/15
20 Tawny-edged Skipper    7/1
21 Crossline Skipper            7/12
22 Long Dash 
23 Northern Broken Dash    5/30
24 Little Glassy Wing            6/8
25 Sachem                               6/29
26 Delaware Skipper             7/16
27 Mulberry Wing 
28 Hobomok Skipper             5/13
29 Zabulon Skipper               5/6
30 Broad-winged Skipper     7/23
31 Black Dash 
32 Dun Skipper                      5/30
     Dusted Skipper                 5/7
33 Ocola Skipper 
 Family PAPILIONIDAE
34 Pipevine Swallowtail      5/1
35 Zebra Swallowtail           8/17
36 Black Swallowtail           4/11
37 Giant Swallowtail           8/14
38 Tiger Swallowtail           4/8
39 Spicebush Swallowtail  4/18
40 Palamedes Swallowtail 
 Family PIERIDAE 
41 Cabbage Butterfly        3/20 
42 Clouded Sulphur         4/4
43 Orange Sulphur            3/26
44 Cloudless Sulphur       (4/29 prob.) 6/7
45 Little Yellow                7/22   (Last seen 2007)
46 Sleepy Orange              7/22

Family LYCAENIDAE
47 Harvester                           9/3
48 American Copper            6/21
49 Coral Hairstreak 
50 Edward's Hairstreak       6/19
51 Banded Hairstreak           6/8
52 Striped Hairstreak           6/8
53 Red-banded Hairstreak   4/24
54 Juniper Hairstreak         7/20
55 Brown Elfin                     4/10
     Pine Elfin                         4/20
56 White-m Hairstreak         9/9
57 Gray Hairstreak               4/24
58 Eastern Tailed Blue         4/15
59 Spring Azure                    4/1
     Northern Spring Azure    4/10
60 Summer Azure                  3/21
61 Appalachian Azure          5/5
Family LIBYTHEIDAE
62 Snout Butterfly                 5/6
 Family NYMPHALIDAE
63 Variegated Fritillary        5/31
62 Great Spangled Fritillary  5.31
65 Aphrodite                          6/19
66 Meadow Fritillary            4/23
67 Pearl Crescent                   4/23
68 Baltimore                           5/31
69 Question Mark                  3/21
70 Comma                               3/9
71 Gray Comma                    3/20
     Compton's Tortoiseshell  3/20
72 Mourning Cloak               3/8
73 Milbert's Tortoiseshell     5/13
74 American Painted Lady   4/7
75 Painted Lady                     8/6
76 Red Admiral                      5/4
77 Buckeye                              7/11
78 Red-spotted Purple           5/6
     Banded Purple (subspecies of Rs Purple  5/22 
                               A rare sighting.)
79 Viceroy                               7/11
Subfamily APATURINAE
80 Hackberry Butterfly        5/30
81 Tawny Emperor               7/4
 Subfamily SATYRINAE
82 Northern Pearly Eye           8/18
83 Appalachian Eyed Brown  6/12
84 Little Wood Satyr             5/8
85 Common Ringlet
86 Common Wood Nymph  7/11
 Subfamily DANAINAE
87 Monarch                           5/14
.
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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 (and photographs) for North America can be found at Butterflies and Moths of NA.   (http://www.butterfliesandmoths.org/)

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.