Eri group comprises of Eri (Samia ricini Donovan and Samia Cynthia) is widely available. Besides this wild silkworms like Attacus atlas and Cricula species are distributed in this region. Castor (Ricinus communis Linn.) is primary food plants of Eri silkworm and commonly distributed in this region. However, Kesseru (Heteropanas fragrans Roxb.) is also considered as another primary perennial food plants. Besides these two, eri silworm being polyphagous feeds on several alternative food plants viz. Borkesseru (Ailanthus excels Roxb.), Barpat (Ailanthus grandis), Topioca (Manihot esculanta Crantz), Gulancha (Plumeria acutifolia), Gamari (Gmelina arborea), Payam (Evodia flaxinifolia), are endemic to this region.
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