A dragonfly is a flying insect belonging to the order Odonata, infraorder Anisoptera (from Greek ἄνισος anisos, "unequal" and πτερόν pteron, "wing", because the hindwing is broader than the forewing). About 3,000 extant species of true dragonfly are known. Most are tropical, with fewer species in temperate regions. Loss of wetland habitat threatens dragonfly populations around the world. Adult dragonflies are characterized by a pair of large, multifaceted compound eyes, two pairs of strong, transparent wings, sometimes with coloured patches, and an elongated body. Many dragonflies have brilliant iridescent or metallic colours produced by structural colouration, making them conspicuous in flight. An adult dragonfly's compound eyes have nearly 24,000 ommatidia each.
Ka-Zar of Prehistoria[]
Dragonflies are one of the many species from the modern era that are found in Prehistoria. They are called Jukans by many tribes of Stone Age humans and are among one of the smallest animals in Prehistoria. These insect roam the water edges of several enviornments of Prehistoria mostly the swamps of Pellucidar. Many species of dragonflies are small, however the biggest dragonfly in Prehistoria is the prehistoric species the Meganeura.