BC
Canada
Butterflies of Canada (Canadian Biodiversity Information Facility website)
North America
Butterflies and Moths of North America (BAMONA)
Butterflies of America
Other Butterfly Atlas projects
Ontario Butterfly Atlas
Maritimes Butterfly Atlas
Connecticut Butterfly Atlas
Maine Butterfly Survey
Massachusetts Butterfly Atlas
Vermont Butterfly Atlas
Butterflies of the New Millenium (UK)
Butterfly and Related Organizations
Entomological Society of British Columbia (ESBC)
Alberta Lepidopterists’ Guild (ALG)
Toronto Entomological Association (TEA)
North American Butterfly Association (NABA)
Lepidopterists’ Society
Xerces Society for Invertebrate Conservation
Butterfly Conservation (UK)
Butterfly Conservation Europe
General Butterfly Information
Garden Treasures – Where Do Butterflies Come From?
(Recommended for inclusion by a Brownie troop from Denver, Colorado – thank you!)