silkworm moth
insect
lepidopteran whose caterpillar has been used in silk production (sericulture (silk)) for thousands of years. Although native to China, the silkworm has been introduced throughout the world and approaches complete domestication. The adult attains a wingspan of 40 to 50 mm (about 2 inches) and has a thick bristly body. In its brief adulthood of two or three days, it does not eat and seldom flies. The female lays about 300 to 500 eggs.Besides its natural food of mulberry leaves, silkworm caterpillars may sometimes eat the foliage of the Osage orange or lettuce. The pale larva has a characteristic posterior (caudal) horn. It attains a maximum length of 75 mm (about 3 inches) during a 45-day growing period. Pupation occurs within a cocoon that is made of one continuous white or yellow strand of silk averaging about 915 metres (1,000 yards) long. This filament is preserved intact for commercial use by killing the pupa with hot air or steam. This moth is one of 60 species in the family Bombycidae. Other silkworm moth families are the giant (Saturniidae (saturniid moth)), American (Apatelodidae), tropical American (Oxytenidae), Australian (Carthaeidae), and autumn (Lemoniidae) silk moths.
- Heinrich Wilhelm von Gerstenberg
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- Heinz L. Fraenkel-Conrat
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