UK Butterflies
Recreation, Outdoors, Wildlife, Butterflies - UK Butterflies. Photographs, food plants, and flight charts of all species regularly found in the United Kingdom.
https://www.ukbutterflies.co.uk/
Matt Rowlings's European Butterflies
Recreation, Outdoors, Wildlife, Butterflies - Matt's European Butterflies. Features photos of many rare and unusual European butterflies.
http://www.eurobutterflies.com/index.php
Butterfly Ireland
Recreation, Outdoors, Wildlife, Butterflies - Butterfly Ireland. Photographs of Ireland's butterflies, with many photographs of eggs, pupae, and larvae.
http://butterflyireland.com/
Carolina Butterfly Society Home Page
Recreation, Outdoors, Wildlife, Butterflies - Carolina Butterfly Society. Club for butterfliers in North and South Carolina.
https://www.carolinabutterflysociety.org/
Home wisconsinbutterflies.org
Recreation, Outdoors, Wildlife, Butterflies - Wisconsin Butterflies. A guide to the butterfly species of Wisconsin, including species accounts, lists by county, and links.
https://wisconsinbutterflies.org/
Connecticut Butterfly Association
Recreation, Outdoors, Wildlife, Butterflies - Connecticut Butterfly Association. Promotes the awareness and appreciation of butterflies and moths.
https://ctbutterfly.org/
San Jose Butterfly Farm
Recreation, Outdoors, Wildlife, Butterflies - San Jose Butterfly Farm. Photographs and information about the natural history and farming of butterflies in Costa Rica.
http://www.butterflyfarm.co.cr/