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.
Damselflies are insects in the sub-order Zygoptera (meaning yoke-winged). Dragonflies are usually larger, and their eyes touch near the tops of their heads. Their wings do not narrow at the base and the forewings and hindwings differ in shape. Their wings are usually spread apart when they rest. Dragonflies are insects in the sub-order Anisoptera (meaningunequal-winged).