Not same to C. vietnamica, female of C. takakuwai colorful and there are 2 forms of males, black form and yellow/orange or red form. The characteristic for quick recognizing two species is apex of the elytra, in C. takakuwai the tips are point but round in C. vietnamica.
C. takakuwai only known in the location where the holotype of the species was found, Pu Mat National Park, Nghe An Province with elevation about 700m.
There is no much information about behavior of the beetles of Casiphia, however they are day flying insects and the males be attracted by some kind of organic compose that released by female, the organic compose maybe similar to product as burning gasoline because the males of the genus also come to exhaust of machines/generators.
Male of Casiphia (Raucocasiphia) takakuwai - Black form
Male of Casiphia (Raucocasiphia) takakuwai - Yellow/orange or red form
Female of Casiphia (Raucocasiphia) takakuwai