Blue Mormon (Papilio polymnestor) :
This is State Butterfly of Maharashtra
This is Endemic butterfly in India & Shri lanka. Mostly found in Western Ghat. most common in heavy rainfall areas, such as evergreen forest in western ghat. 

Habitat :-  It frequents flowers especially of Mussaenda frondosa, Ixora coccinea, Jasminum spp. and Asystasia gangetica.

Size : - 

Food plants :  Atalantia racemosa and Atalantia wightii , 
                         Glycosmis arborea, 
                         Plramigyna monophylla, 
                         Citrus grandis, 
                         Citrus limom.