author(s)
Praban Boro and Shilpi Devi Borah

abstract
Biodiversity means variability and availability of large number of species of a genus in a particular area. In North-Eastern region large number of sericigenous insect species and their host plants are found. This region of India is categorized as one of the major and important hotspot area among 35 biodiversity hotspots of the world and a prominent and comfortable zone for silk producing insects. North-Eastern zone also has a unique position around the world as it is the only homeland of all the four kinds of silkworm viz., eri, muga, tasar and mulberry. Not only the silkworm but also this region is a homeland of large number of silkworm host plants varieties. Presently 31 species of saturniidae and 9 species of bombycidae were reported from North-Eastern region of India. But studies on very few species have made till date. To maintain the tradition of this region as a hotspot area, application of proper strategies should be made for the conservation of sericigenous insect species. Hence this region remains as a hotspot forever to the world.