“he U.S. Fish and Wildlife Service (USFWS) has made the final determination to list the island marble butterfly (Euchloe ausonides insulanus) as an endangered species and designate critical habitat for the species under the Endangered Species Act (ESA).
The island marble, a beautiful, medium-sized, white butterfly with green ‘marbling’ on its wings, was historically known from southern Vancouver Island and the Gulf Islands of Canada. It went undetected for 90 years until being rediscovered in 1998 on San Juan Island, Washington. Despite subsequent ongoing conservation efforts, such as captive rearing and improving the butterfly’s prairie habitat, the butterfly is in danger of extinction. The small population size of the butterfly makes it especially vulnerable to threats, including habitat loss and predation.”