Carlos Peña
- Research on the systematics and evolution of Satyrinae, one of the largest groups of butterflies. Based at Stockholm University.
- http://people.su.se/~cpena/

White Admiral (Limenitis camilla)
- Features a photo and provides facts about behavior, food plants, and habitat. Includes worldwide and European range.
- http://www.butterfly-conservation.org/index.html?/species/bdata/white_admiral.html

Viceroy Butterfly (Limenitis archippus)
- Species account describes habitat, range, identification, life history, diet, and flight periods. Provides photos.
- http://www.desertusa.com/mag00/jul/papr/vic.html

White Admiral (Limenitis arthemis)
- Includes facts about habitat, range, reproduction, and diet. Includes scientific classification.
- http://animaldiversity.ummz.umich.edu/site/accounts/information/Limenitis_arthemis.html

Viceroy (Limenitis archippus)
- Habitat, physical traits, range, reproduction, and behavior of this species. Includes a photo.
- http://animaldiversity.ummz.umich.edu/site/accounts/information/Limenitis_archippus.html