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This scheme is monitoring changes in the abundance of British butterflies and has produced important insights into almost all aspects of butterfly ecology.
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 museum specimens.
Species descriptions, life cycle, morphology, and tips on photographing, rearing, collecting, and preserving specimens of caterpillars occurring in forests of the eastern United States.
An online, updated version of The Natural History Museum's card index archive to the scientific names of the living and fossil butterflies and moths (Lepidoptera) of the world.