How many dragonfly species are there?
The actual number of described species of Suborder Anisoptera (dragonflies) at this time is 2,874. The Suborder Zygoptera (damselflies) consists of about 2,698 species, and the Suborder Anisozygoptera contains only 2 species. Thus, there are 5,574 recognized species of odonates at the present time. This number is constantly changing, with new species being found and described and (as happens in taxonomy) similar species being combined into a single species. See http://www2.ups.edu/biology/museum/Odonata_genera.