Order Lepidoptera
Taxonomy and species accounts of moths and butterflies from the Animal Diversity Web.

Butterfly and Moth Lifecycles
Photographs of captive moths and butterflies, including cocoons and caterpillars, mostly from Nebraska, USA.

Russian Lepidoptera
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.

Butterflies and Moths
Notes on the biology and ecology of butterflies and moths, with some photographs by Jeroen Voogd.

Caterpillar Hostplants Database
This is a Natural History Museum project to create a searchable database of information linking caterpillars to their host plants.

MKLep: Butterflies and Moths of Milton Keynes
Extensive site for Lepidoptera in Milton Keynes, England, with photographs, sightings, and survey results.

Estonian Insect News
News in faunistics and ecology of Estonian Lepidoptera and other insects.

Michigan Lepidoptera Survey
Projects, checklists of species, and photographs of butterflies and moths of Michigan.

Lepidoptera.Net
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.

Catalogue of the Lepidoptera of the French Antilles
Photographs of specimens and notes on biology and distribution of the macrolepidoptera of Martinique, Guadeloupe and their dependencies.

Lepidoptera Larvae of Australia
Images and descriptions of biology, behavior, and life histories of 1238 Australian Lepidoptera species. Includes 462 caterpillar photos.

Database of Illinois Lepidoptera
Lists of county records for each species and species recorded in each county. From the Illinois State Museum.

Colour Atlas of the Siberian Lepidoptera
Photos of specimens by Siberian entomologist Eduard Berlov.

Caterpillars of Eastern Forests
Species descriptions, life cycle, morphology, and tips on photographing, rearing, collecting, and preserving specimens of caterpillars occurring in forests of the eastern United States.

Markku Savela's Lepidoptera
Taxonomic tree including common and scientific names, publication details, references, links, general range maps, and some images.

Caterpillars of the Pacific Northwest
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.

Georgia Lepidoptera
Photographs and species lists of the moths and butterflies of Georgia and the southeastern United States. Includes helpful hints for beginners, references, and links.

Atropos
Publication for butterfly, moth, and dragonfly enthusiasts in the British Isles. Insect migration, conservation, and field techniques are central themes.

Furman University Lepidoptera Collection
Gallery of images of scanned specimens.

Moths and Butterflies of Europe
A large photo gallery of European moths and butterflies, including larvae and pupae.

Bill Hark's Lepidoptera Photos
Photos of butterflies and moths from Virginia and elsewhere.

Immigration of Lepidoptera into the United Kingdom
Sighting reports and photographs of migrant butterflies and moths.

Butterflies and Moths of the World
Searchable database of generic names and type species. From The Natural History Museum, London.

Lepidoptera of Southern Vancouver Island
Photographs and text of 191 species by Jeremy Tatum.

Lepidoptera Resources
Lists of butterfly and moth books and stamps; links.

Amateur Entomologist
Butterfly and moth specimens for exchange, butterfly picture galleries, entomological expedition to French Guyana, butterfly preservation, and links. In English and French.

UK Butterflies and Moths
An online collection database with specimen images and details from the Natural History Museum.

LepIndex - Global Lepidoptera Names Index
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.

David Bell's Butterflies and Moths
Butterflies and moths of central Ontario, Canada. Observation techniques, mimicry, life cycles, changing distribution, photos, and links.

The Nuelle Collection
Photos of butterfly and moth specimens, mostly from Texas, by Robert Nuelle.

Lepidoptera of Southeastern Arizona
Detailed information from the Arizona Lepidoptera Survey on the butterflies and moths of southeastern Arizona and Sonora, Mexico. Includes many images of dead specimens and live caterpillars.

Butterflies and Moths in the Netherlands
Information and photos of Lepidoptera in the Netherlands.

Oz's Insect World
Information about the butterflies of Israel and Saturnids of the World. Includes photos of specimens and some Israeli Coleoptera.

Lepidoptera of Belgium
Electronic version of the catalogue of the Lepidoptera recorded from Belgium.

Swedish Lepidoptera
Sightings, distribution, migration, projects, and red lists.

Lepidoptera of East Tennessee
Photo gallery focusing on backyard moths in Knox County, Tennessee.

UK-Leps
Forum for discussion of Lepidoptera of the British Isles.