Go to BERKS COUNTY NATURE Home Page
Butterflies of Berks County, Pennsylvania
Sightings in 2009
(Go to Lancaster Co. Butterfly Sightings)

     The butterfly species in bold have been seen in Berks County, Pennsylvania in 2009. There are records of 108 species for Berks County. The list below includes all those reported from 2003 through 2008, a total of 85 species. New species (not seen during 2003 - 2008) 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 of the one hundred eight species are known to have been seen in the past 40 years. Three species were added to this list in 2008.
If you have a reliable sighting not on this list for 2009, please send an email to.


Sightings in 2009   (73 species, the highest in the 7 years of list)  --- Updated 9/26/09
                                   (Latest: Milbert's Tortoiseshell.)
  Berks County, Pennsylvania - 2009

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

Family LYCAENIDAE
47 Harvester 
48 American Copper           7/10
     Coral Hairstreak            7/11 (new to list)
     Edward's Hairstreak     7/11  (new to list)
49 Banded Hairstreak         6/22
50 Striped Hairstreak
51 Red-banded Hairstreak  6/1
52 Juniper Hairstreak      7/25
53 Brown Elfin                 4/25
54 White-m Hairstreak     5/24
55 Gray Hairstreak            7/13
56 Eastern Tailed Blue    5/10
57 Spring Azure              4/2
58 Summer Azure            6/6
59 Appalachian Azure    5/10
Family LIBYTHEIDAE
60 Snout Butterfly   approx. 7/4
 Family NYMPHALIDAE
61 Variegated Fritillary        8/16
62 Great Spangled Fritillary   6/13
63 Aphrodite 
64 Meadow Fritillary           6/22
65 Pearl Crescent                 5/10
66 Baltimore                         6/22   Adult & pupa
67 Question Mark                  5/31
68 Comma                               3/18
69 Gray Comma 
70 Mourning Cloak               3/17
71 Milbert's Tortoiseshell     9/26
72 American Painted Lady   5/10
73 Painted Lady                     6/4
74 Red Admiral                      5/13
75 Buckeye                               7/11
76 Red-spotted Purple           5/20
77 Viceroy                               7/22
Subfamily APATURINAE
78 Hackberry Butterfly          7/2
79 Tawny Emperor     7/30
 Subfamily SATYRINAE
80 Northern Pearly Eye        7/11
81 Appalachian Eyed Brown 7/11
82 Little Wood Satyr          5/22
83 Common Ringlet
84 Common Wood Nymph     7/11
 Subfamily DANAINAE
85 Monarch         6/21  (And Egg found in May.)
.
.
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.