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.
When dragonflies hatch they are called nymphs. Dragonfly nymphs are voracious predators that have no resemblance to their adult forms. Dragonfly nymphs molt (shed their skin) up to 12 times, depending on species, and can spend as long as four years as nymphs. Dragonflies living in tropical regions spend less time in the nymph form while dragonflies living in temperate regions will spend longer as nymphs as the onset of winter delays maturation.