Chlosyne lacinia
- Research focusing on the effects of climate change and habitat loss on the persistence of populations, specifically, three checkerspot butterflies: Chlosyne lacina, Euphydryas gilletti, and Euphydryas editha
- http://www.stanford.edu/%7etcbone/

Harris' Checkerspot (Chlosyne harrisii)
- Identification tips, life history, ecology, and range. Includes a photo.
- http://www.butterfliesandmoths.org/species?l=1722

Nymphalinae
- World checklist and classification of the subfamily, with some photographs of specimens.
- http://www.zoologi.su.se/research/wahlberg/

White Peacock (Anartia jatrophae)
- Photos of this species taken in Texas and Florida.
- http://vireos.com/whitepeacock.html

Small Tortoiseshell (Aglais urticae)
- Photos of adult, larva, and pulpa of this species.
- http://www.leps.it/SpeciesPages/AglaisUrtic.htm

Hoary Comma (Polygonia gracilis)
- Photo, description, range, habitat, and ecology of this species.
- http://imnh.isu.edu/digitalatlas/bio/insects/butrfly/famnymph/pogrf.htm

Northern Crescent (Phyciodes cocyta)
- Physical traits of caterpillar and adult, range, habitat, diet, and ecology. Includes a photo.
- http://imnh.isu.edu/digitalatlas/bio/insects/butrfly/famnymph/phcof.htm

Silvery Checkerspot (Chlosyne nycteis)
- Physical traits, similar species, life cycle, flight periods, and habitat. Provides a photo.
- http://www.enature.com/partners/nwf/showSpeciesLG_nwf.asp?familyName=&shapeName=&curFamilyID=&showType=4&rgnID=1599&curGroupID=2&curPageNum=64&recnum=BU0352

Checkerspot Resources
- Gallery of six species of Euphydryas and bibliography.
- http://www.nwjones.demon.co.uk/chspot/

Painted Lady (Vanessa cardui)
- Fact sheet includes life history, ecology, known predators, and scientific classification. Photos provided.
- http://animaldiversity.ummz.umich.edu/site/accounts/information/Vanessa_cardui.html

Red Admiral and Painted Lady Research Site
- Detailed information about the biology of butterflies in the genus Vanessa in the United States.
- http://www.public.iastate.edu/~mariposa/

Red Admiral (Vanessa atalanta)
- Geographic range, physical traits, habitat, diet, and behavior. Includes photo.
- http://animaldiversity.ummz.umich.edu/site/accounts/information/Vanessa_atalanta.html