A wild silk. Silk yielded by the attacus ricini (or samia ricini) and attacus cynthia genus of silkworm, feeding on castor leaves. Found in Assam, Bihar, Orissa and certain parts of Bengal and Andhra Pradesh. The word Eri is a derivative from the Sanskrit word for Castor Plant, eranada, varanada, arandi. Castor leaf is the main food of these silkworms, so the name ‘Eri’. This is the only completely domesticated non-mulberry variety. Its silk is spun as it cannot be reeled. The rearing of Eri silkworms is called Ericulture. Also referred to as Endi Eri (Endi).