Psychotic disorders are severe mental disorders that cause abnormal thinking and perceptions. People with psychoses lose touch with reality. Two of the main symptoms are delusions and hallucinations.
How many dragonfly species are there? Answer: 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.
Dragonflies (order Odonata) are divided into two distinct sub-orders, the Zygoptera or Damselflies and the Anisoptera or Dragonflies. You can find a description of these sub-orders on the Damselflies and Dragonflies pages. Each species that has been recorded in Great Britain and Ireland is described and illustrated on a separate page. The gallery below is your key to accessing these descriptions. Click on an Image to see it at a higher resolution. Click on a species Name (common or scientific) to see the species description, more images, details of habitat, distribution & status, and notes about similar species. For some species a Management Fact File is attached, in PDF format.