US GEOLOGICAL SURVEY / SCIENCE PHOTO LIBRARY US GEOLOGICAL SURVEY / SCIENCE PHOTO LIBRARY
Karner blue butterfly (Lycaeides melissa samuelis) chrysalis. The adult butterfly emerges from the chrysalis after roughly 10 days. The karner blue, which is found in the northeastern USA, has become endangered as the blue lupine flowers it depends on have been lost due to habitat destruction.
Model release not required. Property release not required.