Range and habitat: The Karner blue butterfly is native to the oak
savannas and pine barrens of the Great Lakes Region, including parts of
Natural diet: The larvae eat leaves of the wild lupine (Lupinus
perennis); the adult butterflies eat nectar from various prairie
Size / weight range: Adult Karner blues are approximately the
size of a quarter.
Interesting Facts: The Karner Blue butterfly is an endangered species.
Over-wintered eggs hatch in April and caterpillars develop into adults
in approximatelyt three weeks.
Adult butterflies mate in May or June and lay eggs which hatch in 3-5
days, then develop into adults in July. These late summer adults mate
in July-August and lay eggs, which over winter and hatch the following
Learn more about the Toledo Zoo's Butterfly Conservation Project: