Lepidoptera (butterflies, moths)
- Allyn Museum of Entomology - over 1 million specimens, largely Lepidoptera. Florida
- Almond Moth Bibliography - Bibliography of Ephestia cautella (Walker)
- Aquatic Insects of Michigan - checklist and identification resources
- Arctiinae of the former USSR - a list of Arctiinae with full synonymy, references on first descriptions and distribution. Also data on Ethmiidae, Lithosiinae, Lasiocampidae
- Association for Tropical Lepidoptera - promote the study and conservation of Lepidoptera worldwide, especially in the tropical regions of the world
- Atlas of caterpillars from Europe and Asia Minor - photos of caterpillars of butterflies and moths from Europe and Asia Minor
- Australian Faunal Directory - checklists and bibliographies for Australian insects
- Bibliography of Pink Bollworm - searchable and downloadable
- Biocontrol Web Site - USDA-ARS laboratory searches for alternative methods to reduce crop losses caused by insect pests. Research on the introduction and conservation of pests' natural enemies and use of trap crops
- Biology of Cameraria ohridella - ideo, by Ulrich Zunke and Gerhard Doobe, chronicles the feeding behavior and morphology of the horse-chestnut leaf miner in Hamburg, Germany.
- Borboletas GaÚchas - fotos de borboletas (Lepidoptera: Papilionoidea) de Rio Grande Do Sul, Brasil
- British Butterflies - covers 61 species from Britain and Ireland. Over one hour of motion video.
- British Butterfly prints by Humphreys - Scans of 42 original antique prints from Henry Noel Humphrey's British Butterflies. The prints were over 155 years old and had original hand coloring. They feature the butterflies on the wild flowers and plants they inhabit.
- BugGuide.Net - community site with user-submitted images for identification, information on insect groups
- Butterflies and Moths - biology and ecology of butterflies and moths with basic information about differences between the two, hearing, communication
- Butterflies of Catalonia
- Butterflies of Ireland - brief photographic guide
- Butterflies of New England - links to photos and species information
- Butterflies of North America - distributional data, thumbnails, and checklists
- Butterflies of North America CD-ROM: A Natural History and Field Guide - by Dr. James A. Scott. Pictures of 679 species; maps; life cycles; behavior; hostplants; identification tools; glossary. For Windows only.
- Butterflies of North Asia - The site of late Yu.P. Korshunow, now guided by s. L. Nikolaev. A scientific site mostly dedicated to Durna studies of the Asian part of Russia.
- Butterfly Art - Butterfly art designs: artistically arranged specimens of butterflies, beetles and arachnids set either mounted in frames or acrylic domes
- Butterfly Conservation Society of Taiwan
- Butterfly Conservation Society of the Republic of China
- Butterfly Info in the Netherlands and Surrounding Areas - brief description and plates of each Dutch butterfly species, as well as a literature listing and butterfly-related poems
- Butterfly Pictures - by Philip Greenspun
- Butterfly Society of Japan
- Butterfly Tutorials - caterpillars and adults of cloudless sulpher, giant swallowtail, Gulf fritillary, longtailed skipper, zebra longwing, black swallowtail, monarch, viceroy, European cabbage butterfly and Florida atala.
- Calodema Website of Dr TJ Hawkeswood - Website provides free PDF files of TJ Hawkeswood and his co-workers biological research.
- Canadian National Collection of Insects - 17 million specimens, mostly North American fauna. Ottawa, Canada.
- Canegrub - training package for the Australian sugar industry
- Carnegie Museum of Natural History - 6.9 million specimens
- Carolina Butterfly Society
- Catacola - underwing moths. Taxonomy, rearing guide, keys, egg gathering techniques
- Catalogue of the Lepidoptera of the French Antilles - a database dealing with lepidopteran families occurring in the islands of Martinique and Guadeloupe. Many species listed here may be found throughout the West Indies.
- CATE Sphingidae - Project aimed to develop the methodology and sociology for transferring the enterprise of taxonomy onto the internet using hawkmoths (Lepidoptera, Sphingidae) and aroid lilies (Araceae) as exemplar taxa.
- Caterpillars of La Selva - images of caterpillars in a tropical wet forest in Costa Rica
- Checklist of Finnish Lepidoptera
- Checklist of Florida Lepidoptera - An up-to-date list of all the butterflies and moths recorded from Florida. Includes alphabetical indices to both scientific and common names, and some linked images.
- Checklist of Michigan Butterflies
- Checklist of Michigan Orthopteroids - over 150 species included.
- Checklist of North American Butterflies - includes 722 species
- Checklist of the Sphingidae of British Columbia - Royal British Columbia Museum (PDF File)
- Chestnut Leaf Miner - Cameraria ohridella, a new pest in Central Europe. From Department of Applied Entomology (LMU-Munich)
- Colour Atlas of the Siberian Lepidoptera - by Eduard Berlov
- Common North American Arthropods - Extensive catalog of copyrighted high-resolution arthropod photographs.
- Conifer Defoliators of British Columbia - Decriptions and images of the conifer defoliating caterpillars and sawflies that occur within BC. Host trees and insects biology included.
- Connecticut Butterfly Association
- Connecticut Butterfly Atlas Project - documenting the distribution of Connecticut butterflies
- Dallas County Lepidopterists' Society - Texas
- Danish Lepidopterological Society
- Database of Illinois Lepidoptera - includes county information. Records gathered from 36 institutional and private collections. Specimens from 931 localities collected from 1893 to 1993. Over 1100 species representing 48 families are included.
- DPLEX-L - a discussion list for Monarch Watch participants and those interested in monarchs and monarch migration
- E.H. Strickland Entomological Museum - 1 million specimens. Carabidae of the Nearctic are emphasized. University of Alberta. Includes Kenneth Bowman Collection of Lepidoptera.
- English Names of North American Butterflies Occurring North of Mexico
- Essig Museum of Entomology - 4.5 million specimens, emphasizing western North America.
- European Corn Borer Home Page - central site for European Corn Borer (Iowa State University)
- Forest Insects and Their Damage - images from the Southern Forest Insect Work Conference Slide Series [The Southern Extension and Research Activity-Information Exchange Group-12 SERA-IEG-12)]. Images may be used freely for non-profit educational purposes when accompanied by an appropriate copyright notice.
- Forest Pests of North America - integrated pest management PhotoCD series. Three hundred (300) images in Kodak Photo CD format that can be used to support and assist the implementation of forest IPM in the North America.
- Global Butterfly Species Register - (GART) a global taxonomic catalog. State Museum of Natural History, Stuttgart.
- Goliathus.cz: Online entomological experiences and insect museum - Online insect museum of Coleoptera and Lepidoptera, including bilateral gynandomorphs.
- Gulf of Guinea Islands' Biodiversity Network - biodiversity of the four islands of Bioko, Principe, Sao Tome and Annobon in the Gulf of Guinea. Entomological resources at present include checklists of the Coleoptera groups Cerambycidae, Lucanidae, Coccinellidae and Caraboidea and Lepidoptera Geometridae and Noctuidae.
- Gypsy Moth in North America - USDA Forest Service
- Gypsy Moth in Virginia
- Gypsy Moth Life Systems Models - modelling tree growth and mortality, population dynamics, and moth/foliage/natural enemies
- Harlan's Big Bugtography Web Page - photographs and observations about insects found in Iowa. Nontechnical.
- Hawk Moths of the Philippines - (Lepidoptera: Sphingidae)
- Heterocera Sumatrana Society e.V. - Heterocera from the Indonesian island Sumatra. German and English
- Hforest - Hypermedia Forest Insect and Disease Knowledgebase and Diagnosis.
- Hong Kong Moths - investigates the zoogeography and phenology of moths in Hong Kong; pictures of species and species lists for several moth families included
- HOSTS - database of hostplants for rearing Lepidoptera
- Illinois Natural History Survey - 6 million specimens. Several insect databases, including a searchable, specimen level Plecoptera database . Dates back to 1858
- Images of New Zealand Lepidoptera type specimens - combined multi-page checklist and image collection. Provides images of type speciemens for the vast majority of New Zealand Lepidoptera species.
- Images of the Furman University Collection of North American Lepidoptera
- Indian Butterflies - Basic photographic guide to the birds and butterflies found in India.
- Insects as Food - recipes for edible insects
- Insects from Former USSR for Collectors - insects from territory of former USSR, including, type locality, synonyms, range, distribution and variation, taxonomic notes, habitat and biology, similar species.
- Insects in Motion - Quicktime video clips of various insects showing feeding behavior and life stage development, including a bee stinging
- Inventory of Geometrid Moths of Europe - multimedia data on systematics, zoogeography and ecology
- Japan Heterocerists' Society - studying Japanese moths
- Key to Butterflies of the Lake Baikal Region - almost 2000 high resolution full-color digital images of all 197 Baikalian species and many of its caterpillars and pupae. Includes pictured key to butterfly families and pictured keys to all species. Detailed information of every species (in Russian). HTML format for Macintosh or PC. First version 31 Dec 2001. Price: $30.00 US (incl. postage). For more information, contact olegberlov@narod.ru.
- Keys for butterflies from Venezuela - Morpho (Lepidoptera: Nymphalidae), Xylophanes (Lepidoptera: Sphingidae), Diaphania (Lepidoptera: Crambidae)
- Korean Society of Sericulture Science - silkworms
- Lasiocampidae of a territory of the previous USSR - list of species with references on first descriptions and full distribution; from Atalanta 23(3/4): 531-548 (1992) with some additions and corrections
- Lepdiopterology.com - Butterfly and moth news, glossary, directory, electronic museum, almanac
- Lepibase - Butterflies of Europe. Author is Antti Roine from Finland. Includes high resolution photos of almost all European butterflies and many caterpillars as well as distribution maps.
- Lepidoptera - Tree of Life
- Lepidoptera Electronic Resources - butterfly and moth resources organized alphabetically, geographically and topically
- Lepidoptera Larvae (caterpillars) of Australia - images, biology, behavior and life history of over 1300 species, both butterflies and moths
- Lepidoptera of Norway
- Lepidoptera.Net - butterflies of Georgia and butterflies and moths from around the world
- Lepidopterists' Society - international organization for professional scientists and amateur enthusiasts
- Lepidopterological Society of Finland
- Lepidopterological Society of Japan
- LepIndex - Global Lepidoptera Names Index. A computerised and updated version of the Natural History Museum's (UK) unique and comprehensive card index archive to the scientific names of the living and fossil Lepidoptera of the world.
- Leps-L - the lepidoptera listserver, gated to the UseNet newsgroup sci.bio.entomology.lepidoptera. A general-purpose forum for those with an interest in butterflies and moths. For more info, including how to subscribe, see the Leps-L Frequently Asked Questions.
- Lincoln University Entomology Research Museum - 150,000 specimens. New Zealand sub-region with emphasis on the South Island fauna
- Louisiana State Arthropod Museum - 400,000 specimens. Fauna of the southcentral United States and Circum-Caribbean region
- Lyman Entomological Museum and Research Laboratory - 2.8 million specimens; second largest insect collection in Canada. Major groups include Orthoptera, Lepidoptera, Coleoptera, Hymenoptera. McGill University
- Lynn Scott's Lepidoptera Images - photographs of over 300 moth species from Ottawa, Canada
- Macleay Museum Invertebrate Collection - 500,000 specimens. University of Sydney, Australia
- Macromoths of Atlantic Canada - Illustrated checklist of macromoths of Fundy National Park, New Brunswick, Canada. Over 600 species.
- Michigan Lepidoptera Survey - documenting Michigan moths, butterflies and skippers. Includes checklist
- Monarch Butterfly Migration - about the migration patterns of butterflies. Includes observational information about where they have seen monarchs and under what circumstances.
- Monarch Watch - including info on monarch butterfly biology, literature and current projects
- Mosquito and Moth Cell Lines - cell culture availability database
- Moth Collecting and Curation Techniques - includes illustrated drying, spreading, and mercury vapor collecting hints
- Moth Photographers Group - Hosted by Mississippi Entomological Museum. Plates for both living moth photos and also for spread specimens, for more than 5,500 species found in North America. Collaborative effort among those who photograph moths with more than 200 contributors.
- Moths in a Connecticut Yard - photographs and comments on the various moths appearing in John Himmelman's yard in Connecticut
- Moths of North Dakota - identification guide, photos of adults and larvae
- Moths of Southeastern Arizona
- Museo Mariposas del Mundo - entomological museum with 70,000 specimens. Lepidoptera, Coleoptera and diverse arthropods of the world
- North American Butterfly Association - largest group of people in North America interested in butterflies. Works to increase public enjoyment and conservation of butterflies
- North Carolina State University Insect Collection - 1.1 million specimens. Emphasis on North Carolina insects and worldwide Homoptera
- Ohio Lepidopterists Society
- Olethreutinae (Lepidoptera: Torticidae) of the Plum Brook NASA Station - photographs of the adult of 58 species along with male genitalia if needed for identification. Ohio, U.S.A.
- Peabody Museum of Natural History - 900,000 pinned specimens. Yale
- Pherolist - database of sex pheromones of lepidoptera and related attractants by families/subfamilies/tribes, genus, species, or chemical component
- Reference Library of Digitized Insect Sounds - many diverse insect sounds, including sounds of insect pests of stored products
- Richard B. Dominick Moth and Butterfly Collection - University of South Carolina
- Saturnia - Saturniidae and other bombycoid moths. Checklists are under Research link
- Saturniidae of the Western Palaearctic - annotated checklist of the silkmoths of Europe, North Africa, the Middle East and Central Asia.
- Schmetterlingsfotos auf CD - European Butterflies. Two PhotoCDs. CD 1: Nymphalida, Papilionidae, Pieridae. CD 2: Lycaenidae, Nemeobiidae, Danaidae, Satyridae.
- sci.bio.entomology.lepidoptera - a butterfly and moth discussion group on Usenet
- Senckenberg Natural History Museum - International research institute and museum. Germany
- Sesiidae of Serbia - 48 species from this family, registered in Serbia, representing 45% of species with European distribution
- Societas Europaea Lepidopterologica - The European Society for the study of moths and butterflies and for the conservation of these insects and their natural habitats
- Societe D'Entomologie Africaine - African Entomological Society. Coleoptera and Lepidoptera
- South Carolina Moths Searchable Checklist
- Southern Lepidopterists' Society - southern U.S.
- Sphingidae of the Americas - sphinx moths
- Sphingidae of the Western Palearctic - An annotated checklist of the Sphingidae of the western palaearctic
- Thais Entomology - two exhibits. Beautiful World of Butterflies and Shapes and Colors from the World of Beetles
- The Butterfly Site - butterfly topics including rearing information, childrens' activities, images
- The International Database on Insect Disinfestation and Sterilization - IDIDAS provides information on disinfestation and sterilization of arthropod species, with dosage levels and conditions, efficacy and references. For researchers, phytosanotary regulators, plant protection services and SIT facility and food irradiation operations personnel.
- The Journal of Research on the Lepidoptera - available in PDF
- The Manduca Project - student explorations of the tobacco hornworm, Manduca sexta
- The University of Wyoming Insect Museum - 250,000 specimens. Holdings are particularly strong in the major orders Hymenoptera (53%), Diptera (12%),Lepidoptera (10%), and Coleoptera (9%). Insect Gallery, with beautiful insects from around the world on display open to public viewing free of charge
- Tortricid.net - photo database of tortricid moths (Lepidoptera: Tortricidae)
- TX-Butterfly - primarily for discussing butterflies, moths and other insects found in and around Texas
- UKmoths - photographic database of moths in the UK displayed in their natural resting position. About 1500 of the 2400 UK moths are featured
- University of Colorado Museum - 550,000 specimens. Many from Rocky Mountain region
- University of Connecticut Biological Collections: Insects - fauna of southern New England
- University of Michigan Musem of Zoology, Insect Division - one of the largest university insect collections in North America with 4.5 million specimens. Especially Odonata, Orthoptera, Acari, Coleoptera, and Homoptera
- University of Minnesota Insect Collection - 3.3 million specimens
- University of Wisconsin-Madison
- Utah Lepidopterists' Society
- Web Images of North American Moth Species - links to images of over 3000 species
- Wilbur R. Enns Entomology Museum - at the University of Missouri-Columbia. 5.75 million specimens. Many aquatic insects of Ozark streams
- Wisconsin Butterflies - Field guide with photos and maps for Wisconsin butterfly species.
- Woolly Bears: Arctiidae Caterpillars - tiger moth identification and rearing
