Eri silk

Eri silk (Assamese: এৰি ৰেচম) comes from the caterpillar of Samia cynthia ricini, found in northeast India and some parts of China, Japan, and Thailand. The name "eri" is derived from the Assamese word "era", which means "castor", as the silkworm feeds on castor plants. One of the common names, the "Ailanthus silk moth", refers to the host plant. Eri silk is also known as endi or errandi in India. The woolly white silk is often referred to as the fabric of peace when it is processed without killing the silkworm. This process results in a silk called Ahimsa silk. Moths leave the cocoon and then the cocoons are harvested to be spun. The eri silkworm is the only completely domesticated silkworm other than Bombyx mori.

Eri caterpillars eat a number of plants, including kesseru. It is grown in 28 provinces of Thailand and in the Indian states of Assam, Meghalaya, Nagaland, Manipur, Arunachal Pradesh, Bihar, Jharkhand, Chhattisgarh, Orissa, Karnataka, Andhra Pradesh and some small cities in other states. The heavy rainfall and humid atmosphere of the region suits the eri culture. The spun threads are often more "cottony" than most Bombyx silks, although some eri yarns can be very soft and shiny. After 30–32 days, the silkworm crawls in search of a comfortable place among the leaves to spin its cocoon.

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