Species name: Brachygonia oculata
Even though described as widespread and common in its range I only recently encountered this dainty species in the Sama Jaya Nature Reserve in Kuching, Sarawak after years of semi-serious dragonfly chasing! The males (I did not see any females) were gathered in quite large numbers in the swampy area of the park and were quite conspicuous in their attractive powder-blue and orange "attire". After I saw the first one it was very easy to see one everywhere I looked along the forest paths!
The species' range is Sundaland (except Java) up to Indochina.