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.
On the average, an adult dragonfly may live up to six weeks while damselflies have an adult life of three or four weeks. During that span, mating, a commonly observed behavior of dragonflies and damselflies must occur before the female can lay fertile eggs to start the life cycle over.