Colias leechi is a very little known butterfly in the family Pieridae. It was described from the East Palearctic "In ramificationibus occidentalibus montium Himalayensium in valle Chonging" ( altitude).Grum-Grshimailo, (1893). Lepidoptera nova in Asia centrali novissime lecta et descripta. Horae Soc. ent. Ross. 27:382
Chongqing covers a large area crisscrossed by rivers and mountains. None are high enough to fit the description and Röber gives Sikkim as the localityJulius Röber in Seitz, A. 1906 The Macrolepidoptera of the world; a systematic description of the hitherto known Macrolepidoptera Volume 1 The Palearctic Butterflies Stuttgart : Seitz'schen (Kernen) and the British Museum card gives the type locality as West Himalaya Ladak.
Taxonomy Described as a variety of Colias eogene. The Global Lepidoptera Names Index treats leechi as Colias staudingeri ssp. leechi. Accepted as a species by Josef Grieshuber & Gerardo Lamas
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