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 are hard to miss-ranging in size from two or three centimeters all the way up to ten centimeters long, they look like small airplanes, with four very large transparent wings and a long, tubular body. They are often colorful. They make a surprisingly loud and deep buzzing sound when flying.ragonflies are the largest insects in British Columbia. Other names for dragonflies are skimmers, darners and gomphus. Most BC dragonflies are darners, from the family Aeshnidae. Skimmers and gomphus are names for other varieties of dragonfly.