(Libellulidae) Spread all over the world, this family includes more than 140 genera having slightly less than 990 species. Adults are medium in size with a strong appearance and relatively big abdomen and wings. Many species have abdomens decorated with bright colours with more-or-less developed spots on their wings. Adults fly fast but they often perch on stems of river plants. Males of many species of this family are aggressive and have strong regional behavior. They take off in fast trips to chase other males. Larvae complete their metamorphosis in water environments. Species of this family like mainly stagnant water. Larvae and adults are predators consuming a lot of insects.
