"Crocothemis servilia", Ruddy Marsh Skimmer (Scarlet Skimmer), is a species of dragonfly of the family Libellulidae, native to East and Southeast Asia. The fully adult male is bright red and has a black stripe that runs the length of its abdomen. Sub adult males have a kind of orange colour. The abdomen stripe is highlighted well in this stage. The female is almost identical to the sub adult male. The only real way to tell them apart is from their anal appendages.