| 2. | Butterflies of Gloucestershire | | | A guide to the butterflies of Gloucestershire, UK, with photographs, distribution maps, and conservation status for each species. members.aol.com |
| 4. | Butterflies of Ireland | | | Guide to the butterflies of Ireland, with photographs of most species and a guide to indoor tropical butterfly houses. www.irishbutterflies.com |
| 6. | Butterfly Info | | | Information on European butterflies, including photo galleries, poems and lyrics, literature, and a list of good butterfly spots. www.vlinderstichting.nl |
| 16. | Alexanor's Ukrainian Butterflies | | | List of species with scientific and common names, distribution maps, photos, statistics, and databases. www.alexanor.uzhgorod.ua |
| 19. | Butterfly Ireland | | | Photographs of Ireland's butterflies, with many photographs of eggs, pupae, and larvae. Also includes flight charts, distribution maps, sightings, and links. www.butterflyireland.com |
| 21. | Herts and Middlesex Butterfly Conservation | | | The site of the Hertfordshire and Middlesex Branch of Butterfly Conservation includes sightings, conservation work, and an identification guide. www.hmbutterflyconservation.org.uk |
| 22. | British Butterflies | | | Photographs and descriptions of British butterflies by Steven Cheshire. www.britishbutterflies.co.uk |
| 24. | Butterfly Conservation - Kent Branch | | | Includes photos, first sightings, newsletters, information about White Hill Reserve, events and contact information. Located in the UK. www.kentbutterflies.freeserve.co.uk |
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