This map shows how much the range of the Karner Blue Butterfly (Lycaeides melissa samuelis) has shrunk. This butterfly was listed as a federally endangered species in 1992. The habitat of the Karner Blue butterfly is tied to that of wild lupine, a plant with a tall blue spike covered in small flowers, which the butterfly relies on as a caterpillar. Habitat loss from agriculture and development are the main causes for this beautiful butterfly’s decline.