Man Bugs Are So Cool - Tumblr Posts

After years of observing these caddisfly larvae, French naturalist and artist, Hubert Duprat, wondered if the caddis flies would use any materials to build their cocoon. He introduced flakes of gold, pearls and opals to the caddis flies and they did in fact use them for their cocoons. They use their own silk as the glue to hold their pupal constructions together.