When Sonam Wangchuk Lepcha, from Dzongu in north Sikkim, started watching butterflies and taking pictures of them, he was not taken very seriously by the people around him. ‘Chocolate-bordered Flitter’ The new species of butterfly, now named the Chocolate-bordered Flitter, also carries the scientific name Zographetus dzonguensis, after Dzongu in north Sikkim, the place where it was discovered. Mr. Wangchuk …