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Zoological Survey of India (ZSI) is a taxonomic research organization dedicated itself in exploring and documenting the country’s faunal resources. ZSI, established on 1st July, 1916, introduced a new era in the history of zoological research in the country. Since its inception, ZSI has been carrying out the systematic explorations, inventorying/ monitoring, and documenting the teeming faunal diversity of India, including discovering/describing new taxa to science. ZSI has, to its credit, published over 1400 scientific documents on Indian fauna, and over 5000 species new to science described from diverse ecosystems/habitats of India and its neighbouring countries. ZSI safeguards the largest faunal repository of the National Zoological Collections of voucher specimens, caring and maintaining 4 million specimens, including 20,000 ‘types’, of all faunal groups from protozoa to mammals known from India and the adjacent countries.