Biological red dragonfly, the abdomen is about 3 cm long and the hind wings are about 4 cm long. Mature male dragonflies are scarlet in color and have transparent wings. The female is yellow, and it is distributed in low altitude areas with red dragonfly 1( 15). Red dragonfly mainly appears in April-65438+February, and often moves near the grass near the water area. It is a common dragonfly. Red dragonfly is the general name of the genus Odonata of Dragonfly family, and there are about 2 1 species of Hemiptera and Summer Odonata. The female adult and immature male of this dragonfly are yellow, but the male will slowly "change color" from yellow to red at maturity. In the past, people thought that the color difference between the two sexes was to facilitate the identification of their reproduction. Researchers from Japan Industrial Technology Research Institute collected the body pigments of three kinds of red dragonflies, such as Xiachiduokeling, and found that they belong to eye pigments with strong red characteristics (reduced pigments on the body walls and wings of some insects), which will turn yellow when adding oxidants and turn red again when adding reductants. If the yellow female dragonflies are injected with reductant, they will also turn red. [1] The researchers believe that it may be that there are many antioxidants in the male red dragonfly that trigger the reduction reaction, so it can reduce the oxidation of solar ultraviolet rays. This is the first time that scientists have confirmed the change of pigment in redox reaction in animals, which is expected to be used to develop antioxidants.
The red dragonfly has two meanings, one is the symbol of extermination of pests, and the other is the symbol of happiness, auspiciousness and "victory".