The study was undertaken to evaluate the morpho-economic triats of eri silkworm, Philosamia ricini Hutt by feeding
different host plants leaves. Healthy leaves of Castor (Ricinus communis L), Tapioca (Manihot esculenta Crantz), WildCastor (Jatropha curcas L), Barkesseru (Ailanthus excelsa Roxb) were used to conduct rearing. Independent trials as well
as interchanging of food plants during rearing were undertaken. It is observed that, despite the fact that the castor leaves
serve as chief feed for rearing of eri silkworms, the combination of castor and tapioca leaves could also be beneficially
used for commercial rearing of eri silkworm. When the worms were reared by feeding the leaves of castor up to 3rd instar
and interchanging with tapioca leaves during 4th and 5th instar resulted in better eri silk recovery. Hence, the present study
recommends the sequential treatment namely, castor leaves alternating with tapioca leaves for commercial rearing of eri
silk worm larvae