What is the strange-looking capsule attached to this leaf?

Asked July 30, 2014, 2:16 PM EDT

Please identify the object shown in the photos.

Cook County Illinois integrated pest management insect issues dja

2 Responses

It is the chrysalis of a butterfly--probably a monarch butterfly. The leaf in the photo looks like a milkweed leaf, and milkweed is the food source of the monarch caterpillar. It will not take long for the adult butterfly to emerge, and soon you should start seeing the wing colors through the sides of the chrysalis.

Thank You