Books about Delias butterflies
There are few useful books about Delias butterflies, here is the list of the Delias books I am using for my research. All of them are useful to understand Delias localities, subspecies and rare forms.
Monographs about Delias butterflies :
There are 2 major monographies written about Delias.
Monograph of the genus Delias by Talbot
G. Talbot has produced a major work about the genus Delias between 1928 and 1937. His monograph is the Bible for all Delias lovers.
Complete edition of Talbot Monograph of the genus Delias - coll. OP
This monograph has 656 pages about Delias with beautiful plates and very accurate descriptions.
Published in 6 separate parts, it is extremely rare to find a complete edition which will command a very high price. It is easier to find each of the 6 parts separately and bind the books once complete.
I personally found my monograph parts on Abebooks (a great website for antique entomological books) : Abebooks Talbot Delias
An Illustrated List of the Genus Delias Hübner of the World by Yagishita, Nakano, Morita & Nishiyama
Another major work about Delias butterflies produced by Japanese entomologists. Wonderful plates and biotope pictures, a lot of interesting specimens (forms and aberrations) from Yagishita collection.
The book was until recently sold by Roppon-Ashi online bookshop but is now out-of-print. You can now find it on Abebooks from time to time here.