Picture 1 : I saw him flew to the twig not from above but from the stream water 2 feet below and spread out his wings perhaps to dry up or to warm up under the sun.
Euphaea subcostalis is one of the most colorful damselflies in Sabah with shinning metallic blue in middle of both hind wings.
Picture 2 : The same male Euphaea subcostalis. The metallic blue circle under the wings are much brilliantly shinning as compare to the upper side (above picture).
This is the side of the wings (the underside of the wings) a male used to attract a female’s attention.