1. The (earlier) 107 butterflies recorded from Berks County comes from: The "Butterflies and Moths of North America" web site:    (https://www.butterfliesandmoths.org) This number is unchanged.

2. "Butterflies of Pennsylvania - A Guide" by Monroe and Wright, published in 2017, adds two more species to this list. One seen in 2003 to the present and one before 2003.

Together those two references bring the number of butterflies seen in Berks County to 109

The 15 Berks butterfly species not seen since 2002

Thorybes bathyllus Southern Cloudywing
Erynnis martialis Mottled Duskywing
Pyrgus centaureae Grizzled Skipper
Amblyscirtes vialis Common Roadside-Skipper
Pieris virginiensis West Virginia White

Pontia protodice Checkered White
Lycaena hyllus Bronze Copper
Callophrys irus Frosted Elfin
Callophrys henrici Henry's Elfin       This species not in BAMONA list for Berks
Satyrium caryaevorus Hickory Hairstreak

Speyeria idalia Regal Fritillary
Speyeria atlantis Atlantis Fritillary
Boloria selene Silver-bordered Fritillary
Phyciodes cocyta Northern Crescent
Satyrodes eurydice Eyed Brown.