I talked about your question with my friend Allan Felsot. He’s an insect scientist at Washington State University. He told me cocoons are mostly silk. But they’re usually made by moths. A butterfly ...

The transition from caterpillar to butterfly is a process that consists of four stages: egg, larva, pupa, and adult. Observe one caterpillar as it developments into a gorgeous winged insect. National ...

Newsreel: Shipment of butterfly cocoons arrives in Detroit in 1928 Newsreel: Butterflies come from every cliime as a large shipment of cocoons is received -- and allowed to mature into larvae, then ...