The silkworm is the larva or caterpillar of the domesticated silk moth, Bombyx Mori, and an economically important insect as it is the primary producer of silk. The domesticated variety, compared to the wild form, has increased cocoon size, growth rate, and efficiency of its digestion. The silk moth has gained tolerance to human presence, handling, and living in crowded conditions. It can no longer fly, depending on human assistance in finding a mate, and lacks a fear of potential predators. Silkworms were first domesticated in China over 5000 years ago, and since then silk production capacity of the species has increased nearly tenfold. Silk was an important trade commodity that started in China then spread to Korea and Japan, India and later the West.