Butterflies of Gloucestershire  
   A guide to the butterflies of Gloucestershire, UK, with photographs, distribution maps, and conservation status for each species.
   http://members.aol.com/bcglos/bflyglos.html

British Butterfly Conservation Society  
   Dedicated to saving wild butterflies, moths and their habitats throughout the UK.
   http://www.butterfly-conservation.org/

Butterflies of Ireland  
   Guide to the butterflies of Ireland, with photographs of most species and a guide to indoor tropical butterfly houses.
   http://www.irishbutterflies.com/

Captain's European Butterfly Guide  
   Photographic guide to the butterfly species of Europe.
   http://www.butterfly-guide.co.uk/

Butterfly Info  
   Information on European butterflies, including photo galleries, poems and lyrics, literature, and a list of good butterfly spots.
   http://www.vlinderstichting.nl/butterflyinfo/

Guy Padfield's European Butterflies  
   Pictures of over 150 European species of butterfly, with butterfly diary, schools' page, and links.
   http://www.guypadfield.com/

Butterflies and Moths of Kent  
   News, sightings, and field trip reports.
   http://www.users.globalnet.co.uk/~kenelks/butterfly.htm

Bernd Harmsen's Butterfly Pages  
   Photographs, red lists, and scientific, English, and German names of the butterflies of Europe.
   http://ourworld.compuserve.com/homepages/har/bfly.htm

European Butterflies by Mario Maier  
   Photos and descriptions of many species. In German and English.
   http://www.geocities.com/europeanbutterflies/indexUS.htm

Moths and Butterflies of Europe  
   A large photo gallery of European moths and butterflies, including larvae and pupae.
   http://www.leps.it/

Sarah Walters - Butterflies  
   Photographs of British butterflies.
   http://www.docsarah.demon.co.uk/butterflies.htm

Alexanor's Ukrainian Butterflies  
   List of species with scientific and common names, distribution maps, photos, statistics, and databases.
   http://www.alexanor.uzhgorod.ua/

Yorkshire Butterfly Conservation  
   Field trips, flight times, photographs, and other resources.
   http://www.yorkshirebutterflies.org.uk/

Butterflies of the Monts du Lyonnais  
   Information about species flying on the hillsides of the Rhône département, France.
   http://perso.wanadoo.fr/felixthecatalog.tim/

Butterfly Ireland  
   Photographs of Ireland's butterflies, with many photographs of eggs, pupae, and larvae. Also includes flight charts, distribution maps, sightings, and links.
   http://www.butterflyireland.com/

Derbyshire Butterflies  
   Photos of butterflies in Derbyshire, UK by Mark Nowak.
   http://www.marknowak.co.uk/

Herts and Middlesex Butterfly Conservation  
   The site of the Hertfordshire and Middlesex Branch of Butterfly Conservation includes sightings, conservation work, and an identification guide.
   http://www.hmbutterflyconservation.org.uk/

British Butterflies  
   Photographs and descriptions of British butterflies by Steven Cheshire.
   http://www.britishbutterflies.co.uk/

Pictures of Dutch Butterflies  
   Small photo gallery of butterflies in the Netherlands.
   http://www.xs4all.nl/~kite/digiscopics/butterflies/

Butterfly Conservation - Kent Branch  
   Includes photos, first sightings, newsletters, information about White Hill Reserve, events and contact information. Located in the UK.
   http://www.kentbutterflies.freeserve.co.uk

Matt's European Butterflies  
   Features photos of many rare and unusual European butterflies. Personal observations and comments on all species are included.
   http://www.eurobutterflies.com

Bedfordshire & Northamptonshire Butterfly Conservation  
   Features sightings, pictures and lepidoptery news. Includes upcoming events and newsletters.
   http://www.bedfordshire-butterflies.org.uk/

Butterfly Conservation Dorset Branch  
   Monitors and conserves butterflies and moths in Dorset. Events, survey data, recording forms, sightings, and species accounts.
   http://www.dorsetbutterflies.co.uk/

LepsEurope  
   E-mail group for discussion of butterflies and moths in Europe.
   http://groups.yahoo.com/group/LepsEurope/

Upper Thames Branch of Butterfly Conservation  
   Serves Bucks, Berks, and Oxfordshire, England. News, field trips, sightings, photographs, and flight data.
   http://www.lepidoptera.dsl.pipex.com/

Butterflies of Catalonia  
   Species list and flight charts. Includes sections on butterflies of Andorra and wasps of Catalonia.
   http://www.papallones.net/papallones/

Butterflies in Europe  
   Photos, trip reports, and links.
   http://members.lycos.nl/notebaert/

Garden Safari: Butterflies  
   Photographs and notes on common butterflies in a garden in the Netherlands.
   http://www.gardensafari.net/english/butterflies.htm

Dutch Butterfly Conservation  
   A Dutch non-profit organization which works for the conservation of wild butterflies and their habitats.
   http://www.vlinderstichting.nl/category.asp?catID=14

UK Butterflies  
   Photographs, food plants, and flight charts of all species regularly found in the United Kingdom.
   http://www.ukbutterflies.co.uk/

ImagineButterflies.dk  
   Photo gallery of butterflies from various parts of Europe by Jakob Arnholtz.
   http://imaginebutterflies.dk/

Butterflies of Northamptonshire  
   Annotated list of 37 species, with photos of most.
   http://www.northamptonshirewildlife.co.uk/wildlife/butterflies.htm