Information on hundreds of species of butterflies occurring in the former USSR, including type locality, synonyms, range, distribution and variation, taxonomic notes, habitat and biology, similar species, and photos of dead adults. osipov.org/insects/lep.htm
This is a Natural History Museum project to create a searchable database of information linking caterpillars to their host plants. www.nhm.ac.uk/entomology/hostplants
Photographs and information about almost all of the common species of butterflies in Georgia, USA with some photos of butterflies and moths from around the world. www.lepidoptera.net
Species descriptions, life cycle, morphology, and tips on photographing, rearing, collecting, and preserving specimens of caterpillars occurring in forests of the eastern United States. www.npwrc.usgs.gov/resource/2000/cateast/cateast.htm
A field guide to caterpillars commonly found in forests and woodlands of the Pacific Northwest, USA, including sections on natural history, nomenclature, identification keys, and a guide to collection and preservation of specimens. www.npwrc.usgs.gov/resource/2000/catnw/catnw.htm
Photographs and species lists of the moths and butterflies of Georgia and the southeastern United States. Includes helpful hints for beginners, references, and links. www.daltonstate.edu/galeps
Butterfly and moth specimens for exchange, butterfly picture galleries, entomological expedition to French Guyana, butterfly preservation, and links. In English and French. butterflies.freeservers.com