The radical of silkworm is: worm

Silkworm, mulberry silkworm, silkworm chrysalis

Silkworms are divided into two categories; one is domestic silkworm, namely mulberry silkworm. Mainly feeds on mulberry leaves. The other type is called mountain silkworm, that is, oak silkworm, which feeds on oak leaves. Silkworms go through 4 stages in their life: egg, larvae, pupa and moth. It is the larvae of silkworm moth and the main raw material of silk products. It plays an important role in human economic life and cultural history. Originating from southern China, ancient texts record that Emperor Xuanyuan began to raise silkworms. The most famous one in Jiangnan is the well-known wife of the Yellow Emperor, Leizu. The staple food of mulberry silkworms is mulberry leaves, which can also be supplemented with a small amount of castor leaves. The cocoon is woven from a continuous piece of silk approximately 300 to 900 meters (1,000 to 3,000 feet) long. The adults and pupae of silkworms are edible and have therapeutic effects. Silkworm moths lay eggs, mate, and reproduce, and then die after laying eggs. Because of its long history and economic importance, the rearing of silkworms has become an important research object of modern science.