Danaus
Life Cycle of the Monarch Butterfly, Monarch Butterfly, Monarch Butterfly Hub, Monarch Lab, Monarch Monitoring Project, Monarch Watch, Monarchs over Chincoteague
Heliconiinae
Arctic Fritillary (Boloria chariclea), Atlantis Fritillary (Speyeria atlantis atlantis), Evolution and Speciation Patterns in the Genus Spe, Great Spangled Fritillary (Speyeria cybele), Heliconius Butterflies, Meadow Fritillary (Boloria bellona), Regal Fritillary (Speyeria idalia), Silver-bordered Fritillary (Boloria selene), Variegated Fritillary (Euptoieta claudia)
Limenitidinae
Carlos Peña, Viceroy (Limenitis archippus), Viceroy Butterfly (Limenitis archippus), White Admiral (Limenitis arthemis), White Admiral (Limenitis camilla)
Nymphalinae
Checkerspot Resources, Common Buckeye (Junonia coenia), Harris' Checkerspot (Chlosyne harrisii), Hoary Comma (Polygonia gracilis), Northern Crescent (Phyciodes cocyta), Nymphalinae, Painted Lady (Vanessa cardui), Red Admiral (Vanessa atalanta), Red Admiral and Painted Lady Research Site, Silvery Checkerspot (Chlosyne nycteis)
Brush-footed Butterflies of North America
Distribution maps, species accounts, and photos of brush-footed butterflies (family Nymphalidae) occurring in the United States and northern Mexico.
Louis Maienza Productions
Photos and brief information on Zebra Longwing and Gulf Fritillary.
Niklas Wahlberg
Research on the systematics of the butterfly family Nymphalidae at Stockholm University. Site includes details on classification (approximately 5235 species in 544 genera) and images of voucher specimens.
Satyridae of Russia
Information on species of Satyridae (or Satyrinae of the Nymphalidae) in the former USSR, including, type locality, synonyms, range, distribution and variation, taxonomic notes, habitat and biology, similar species, and photos of dead adults.
Ullasa Kodandaramaiah
Researcher on Nymphalidae evolutionary at Stockholm University.