Long-tailed Skipper (Urbanus proteus) - Fact sheet describes life history, physical traits, and ecology. Provides a photo and distribution map. - http://www.butterfliesandmoths.org/species?l=1922
Hoary Edge (Achalarus lyciades) - Photos of this species in North Carolina. Describes how to distinguish from Silver-spotted Skipper. - http://www.carolinanature.com/butterflies/hoaryedge.html
Silver-spotted Skipper (Hesperia comma) - Physical characteristics, distribution, habitat, biology, threats, and conservation information. Includes a photo. - http://www.arkive.org/species/ARK/invertebrates_terrestrial_and_freshwater/Hesperia_comma/more_info.html
Silver Spotted Skipper - Image of Epargyreus clarus on Sweet Pea plant. - http://www.images.on.ca/JayC/pages/Silver_Spotted_Skipper.htm