Crysomeliade Mating

I took this picture in the rice fields. They perched on Morning Glory. At that time, they were mating. So I know, that different sizes and colours, doesn't mean different species. The male is smaller and metallic green colours. Whilst, the female is bigger and metallic blue colours.

Scientific Name	-
Common Name	-
ID Naturalist	20024603
Location	Sumedang, West Java
Gear	Samsung J5 (2015) + lensbong prosumer 25 mm
Date	August 25, 2018
Classification
Class	Insecta
Order	Coleoptrera
Family	Crysomeliade
Species	-
Subspecies	-