Tussar Silk Saree also known as Kosa Silk, or Tussah Silk is produced in various part of India, Bhagalpur in Bihar is one of the most prominent one. Tussar Silk is produced from larvae of several species of silkworms from the moth genus Antheraea. The color, feel and radiance of Tussar Silk have a unique attribute of their own matching the spirit of these silkworms.