There are approximately 165,000 known species of butterflies and moths in the world. There are 12,000 known species in the United States and only 760 are butterflies. There are many distinctions between moths and butterflies. Butterfly antennae are swollen or clubbed at the tip, Skippers are hooked, and Moths have a more feathery antennae. Most Moths are nocturnal unlike butterflies that are usually active during the day. All species of the Lepidoptera order are laid as an egg, and then grow to a larvae or caterpillar. Moths usually pupate in the soil, some in a cocoon. Butterflies pupate in a chrysalis that is usually visible on a leaf or twig of some type. This process is called metamorphosis Facts from --> Nation Wildlife Federation Field Guide To Insects And Spiders Of North America, Arthur V. Evans