The marsh skimmer, also known as tricolored marsh hawk, and slender blue skimmer, (Orthetrum luzonicum) is a species of dragonfly in the family Libellulidae. It is widespread in many Asian countries.Odonata: Catalogue of the Odonata of the World. Tol J. van, 2008-08-01
Description and habitat It is a medium sized dragonfly with yellowish white face and blue eyes. Its thorax is yellowish green with some brown stripes. Its wings are transparent, including the base. Its abdomen is pruinosed with azure blue up to the last segments. In old adults, thorax will also get pruinosed, obscuring whole the marks. Females and young males are yellowish green. They breed in marshes and swampy areas in the plains.
See also List of odonates of Sri Lanka List of odonates of India List of odonata of Kerala
References
luzonicum.html World Dragonflies Animal diversity web Query Results Sri Lanka Biodiversity