What are the characteristics of dragonflies

1, dragonflies are the insects with the most eyes in the world. The eyes of dragonflies are big and bulging, occupying most of the head, and each eye has countless "small eyes", these "small eyes" are connected with photoreceptor cells and nerves, which can recognize the shape and size of the object, and their eyesight is very good, and they can look upward, downward, forward and backward without turning their heads. They have excellent eyesight and can see upward, downward, forward and backward without turning their heads.

2. Adult dragonflies have two pairs of narrow and transparent wings of equal length, with a reticulated venation, and there is often a wing mole on the anterior edge of the wings near the top of the wings. The chewing mouthparts are well developed. The thorax is obliquely arranged and the prothorax is small and mobile. Feet close to the head (to facilitate feeding). Abdomen elongated. Compound eyes prominent, antennae small and inconspicuous. The adult structure is quite uniform, but the size varies greatly, the wingspan is generally 5 centimeters Dragonfly dancing on lotus leaves from the smallest 1.8 centimeters (0.7 inches) to the largest 19.3 centimeters (7.5 inches).

3. Unlike many other insects, the dragonfly hatches its eggs in water and its larvae live in water, so it actually lays its eggs by pointing at the water. Female dragonflies lay their eggs in water, mostly by touching the water with their tails when flying, and discharging the eggs. The so-called "dragonfly dabbing" is the performance of the female dragonfly when she lays her eggs. Dragonfly eggs are yellow in color.

Expanded Information

Dragonfly is the common name for the invertebrate, insect order Odonata, suborder Odonata, and suborder Dinoflagellata, which is the most common form of dragonfly.

The bases of the hind wings are slightly larger than the bases of the forewings, and the wing veins are slightly different. At rest the four wings are spread out and laid flat on the sides. Juveniles are short and stout, with rectilinear gills and no caudal gills. There are 3 general families including Aeshnoidea, Cordulegastroidea, and Libelluloidea, ****11 families. The family Aeshnoidea and the family Odonata are the most common and are widely distributed throughout China.?

Dragonflies are carnivorous insects. They prey on flies, mosquitoes, leafhoppers, gadfly midges and small butterfly moths and many other agricultural, forestry and animal husbandry pests. Dragonflies are an important class of natural enemy insects beneficial to human beings. "Dragonflies lay their eggs in water, which is a biological characteristic of dragonflies. Its larvae (larvae) live in the water, the life cycle varies according to species, dragonflies are generally 2 years, some up to 3 to 5 years.

Baidu Encyclopedia-Dragonflies