A note on the butterfly diversity of Zoological Gardens, Thiruvananthapuram, Kerala.Sujitha. P.C.1, Kalesh.S2 and Joseph Bastian31Biologist, Museum and Zoo,Thiruvananthapuram2Consultant, Butter?y Garden,Museum and Zoo,Thiruvananthapuram, 3Director, Department of Museum and Zoos, ThiruvananthapuramCorresponding Author : kaleshs2002in@gmail.comAbstract Zoological gardens can be effective conservation reserves for regional biodiversity. The campus of Thiru-vananthapuram Zoological Garden provides ample space and habitat for survival of a good number of Lepidopteran species including endemics. This study is aimed at elucidating a checklist of butter?ies of the Zoo campus. A total of 92 species were recorded which included 3 species endemic to the Western Ghats. This number far exceeds the total number of butter?ies recorded in some of the protected areas of the Western Ghats, thus highlighting the importance of this urban biodiversity reserve