Another type of beetle, a blister beetle produces a substance called cantharidin that is so caustic it has been used in the removal of warts. Also from the beetle class of insects come fireflies and glowworms, which use chemicals in their bodies to actually make themselves glow. Scientists believe that they use chemicals in their bodies with the oxygen in the air, causing the glowing effect. Whirligig beetles have two sets of eyes. Commonly found swimming, they use one set for seeing above the water surface, and one set to see below the water surface.
Some male insects carry around the female s eggs on their backs until they hatch.
The eggs are carried and protected by a ridge of spiny like material. Leaf insects live in mostly tropical climates. Their wings resemble the leaves of plants around them, allowing them to blend right in when they perch on a leaf. The Kallima Butterfly resembles a dead leaf when it settles onto a branch in its native East Indies. They are all practicing the art of camouflage as it was meant to be.