| • | Alexanor's Ukrainian Butterflies - List of species with scientific and common names, distribution maps, photos, statistics, and databases. |
| • | Bedfordshire & Northamptonshire Butterfly Conservation - Features sightings, pictures and lepidoptery news. Includes upcoming events and newsletters. |
| • | Bernd Harmsen's Butterfly Pages - Photographs, red lists, and scientific, English, and German names of the butterflies of Europe. |
| • | British Butterflies - Photographs and descriptions of British butterflies by Steven Cheshire. |
| • | British Butterfly Conservation Society - Dedicated to saving wild butterflies, moths and their habitats throughout the UK. |
| • | Butterflies and Moths of Kent - News, sightings, and field trip reports. |
| • | Butterflies in Europe - Photos, trip reports, and links. |
| • | Butterflies of Catalonia - Species list and flight charts. Includes sections on butterflies of Andorra and wasps of Catalonia. |
| • | Butterflies of Gloucestershire - A guide to the butterflies of Gloucestershire, UK, with photographs, distribution maps, and conservation status for each species. |
| • | Butterflies of Ireland - Guide to the butterflies of Ireland, with photographs of most species and a guide to indoor tropical butterfly houses. |
| • | Butterflies of Northamptonshire - Annotated list of 37 species, with photos of most. |
| • | Butterflies of the Monts du Lyonnais - Information about species flying on the hillsides of the Rhône département, France. |
| • | Butterfly Conservation - Kent Branch - Includes photos, first sightings, newsletters, information about White Hill Reserve, events and contact information. Located in the UK. |
| • | Butterfly Conservation Dorset Branch - Monitors and conserves butterflies and moths in Dorset. Events, survey data, recording forms, sightings, and species accounts. |
| • | Butterfly Info - Information on European butterflies, including photo galleries, poems and lyrics, literature, and a list of good butterfly spots. |
| • | Butterfly Ireland - Photographs of Ireland's butterflies, with many photographs of eggs, pupae, and larvae. Also includes flight charts, distribution maps, sightings, and links. |
| • | Captain's European Butterfly Guide - Photographic guide to the butterfly species of Europe. |
| • | Derbyshire Butterflies - Photos of butterflies in Derbyshire, UK by Mark Nowak. |
| • | Dutch Butterfly Conservation - A Dutch non-profit organization which works for the conservation of wild butterflies and their habitats. |
| • | European Butterflies by Mario Maier - Photos and descriptions of many species. In German and English. |
| • | Garden Safari: Butterflies - Photographs and notes on common butterflies in a garden in the Netherlands. |
| • | Guy Padfield's European Butterflies - Pictures of over 150 European species of butterfly, with butterfly diary, schools' page, and links. |
| • | Herts and Middlesex Butterfly Conservation - The site of the Hertfordshire and Middlesex Branch of Butterfly Conservation includes sightings, conservation work, and an identification guide. |
| • | ImagineButterflies.dk - Photo gallery of butterflies from various parts of Europe by Jakob Arnholtz. |
| • | LepsEurope - E-mail group for discussion of butterflies and moths in Europe. |
| • | Matt's European Butterflies - Features photos of many rare and unusual European butterflies. Personal observations and comments on all species are included. |
| • | Moths and Butterflies of Europe - A large photo gallery of European moths and butterflies, including larvae and pupae. |
| • | Pictures of Dutch Butterflies - Small photo gallery of butterflies in the Netherlands. |
| • | Sarah Walters - Butterflies - Photographs of British butterflies. |
| • | UK Butterflies - Photographs, food plants, and flight charts of all species regularly found in the United Kingdom. |
| • | Upper Thames Branch of Butterfly Conservation - Serves Bucks, Berks, and Oxfordshire, England. News, field trips, sightings, photographs, and flight data. |
| • | Yorkshire Butterfly Conservation - Field trips, flight times, photographs, and other resources. |
