Slender Blue Skimmer

The Wikipedia article, on Orthetrum luzonicum, explains that adults have pruinescence which spreads over the abdomen, all the way to the last segment. Since the last three segments, of the dragonfly shown here, are not completely pruinosed, I think it is fairly safe to assume that this is a young adult. Wiki goes on to mention that the entire thorax is pruinosed in older adults. There is no problem with distribution in this spotting. O. luzonicum is named after the island of Luzon in the Philippines.