They are medium size damselflies head is typical with brighten cream bluefish marking of their face. Body is black brownish in general with cream yellowish marking on thorax and abdomen, legs short and robust. Wings are hyaline with an apical fate dark spot, they usually fold wings at rest, and they rarely open the wings as resting. They were found in clear streams in tropical forest of Limestone Mountains, in Bach Ma - Thua Thien Hue and recently were recorded in Hon Ba - Khanh Hoa and Lam Dong - Bao Loc. Although they are very common at the habitat sites but they have only been known in the centre and south of Vietnam. They are weak flied damselfly, and do not fly too far from the breeding sites, the mature forms usually fly in shade of the forest but occasionally they can be found near waterfalls, in sunshine.
Male of D. cyanocephala, photographed by Cuong Do in Bach Ma, Thua Thien Hue
Female of D. cyanocephala, photographed by Cuong Do, Bach Ma, Thua Thien Hue