Macrogomphus annulatusMacrogomphus annulatus, commonly known as Keiser's forktail, is a species of dragonfly in the family Gomphidae. It is native to India and Sri Lanka. Two subspecies are recognized, which are geographically separated.SubspeciesMacrogomphus annulatus annulatus Selys, 1854 – from IndiaMacrogomphus annulatus keiseri Lieftinck, 1955 – from Sri Lanka