Colias leechi is a very little known butterfly in the Pieridae family. It was described from the East Palearctic "In ramificationibus occidentalibus montium Himalayensium in valle Chonging" (17,000 feet (5,200 m) altitude). Chongqing covers a large area crisscrossed by rivers and mountains. None are high enough to fit the description and Röber gives Sikkim as the locality and the British Museum card gives the type locality as West Himalaya Ladak.