International Lepidoptera Survey - Organization devoted to discovering and describing new species. Includes images and lists of scientific and common names.
Israeli Lepidopterists Society - Data on butterflies and hawkmoths found within the region as well as a searchable database and photographs.
Lepidoptera Listserver - Service for facilitating communication among those sharing an interest in the species. Based at Yale University in New Haven, Connecticut.
Lepidopterists' Society - An international society devoted to the study and appreciation of butterflies and moths. Membership data, publications, and identification aids.
Societas Europaea Lepidopterologica - European society for the study and conservation of moths and butterflies. Features council data, projects and links.
Southern Lepidopterists' Society - Promotes species knowledge in the southern United States. Offers news, events and identifications. Based in Florida.
TILS Leps Talk - E-mail discussion group that covers of all species related topics. Sponsored by the International Lepidoptera Survey. Offers images and links.
Utah Lepidopterists' Society - Showcases meeting schedule, articles, checklists, bulletin board, species data for kids and links.
