First ever butterfly survey conducted in Mudumalai reserve The first Butterfly Survey was conducted at the Mudumalai Tiger Reserve (MTR) (688.5sq.km) The survey was conducted by the TN Forest Department with the assistance of the Nature and Butterfly Society (TNBS), Coimbatore, and the Worldwide Fund for Nature (WWFIndia). The survey revealed that MTR is home to 175 species of butterflies. The TN State butterfly, Tamil Yeoman, was also recorded during the survey