Dragonflies are an important natural enemy of humans. They prey on flies, mosquitoes, leafhoppers, horseflies, small moths and other agricultural pests. They are an important natural enemy of humans. We have learned in textbooks and seen in daily life that dragonflies usually fly low before it rains. Why is this? Do you know? Contents of this article 1. Why do dragonflies fly low when it is about to rain? 2. Are dragonflies divided into male and female? 3. The living environment of dragonflies 1It's going to rain. Why do dragonflies fly so low?When it is about to rain, dragonflies fly low to protect themselves. This is an instinct of dragonflies. They lower their flying altitude to prevent themselves from being hurt by raindrops, hailstones, and lightning. Dragonflies are invertebrates, the general name for insects of the order Odonata and the suborder Anisoptera. Relatively speaking, dragonflies are carnivorous insects. They prey on flies, mosquitoes, leafhoppers, horseflies, small moths and other agricultural and forestry pests. They are an important natural enemy insect that is beneficial to humans. 2Are dragonflies divided into male and female?Dragonflies are divided into male and female. Male dragonflies are brighter and more beautiful than female dragonflies, while female dragonflies are duller and plainer. During mating, the male will hold the female's head or prothorax with the clasper at the end of his abdomen. Dragonfly, invertebrate, Arthropoda, Insecta, Pterygota, Odonata, Anisoptera, divided into the family of dragonflies and the family of dragonflies. Generally large in size, with long and narrow wings, membranous, and with very clear reticular wing veins. Very sensitive vision, three simple eyes, a pair of thin and short antennae, and chewing mouthparts. The abdomen is slender, flat or cylindrical, with an anal appendage at the end. The legs are thin and weak, with hooks on them, which can catch pests while flying in the air. The larvae develop in water and breathe in the water using rectal tracheal gills. 3Dragonfly's living environmentDragonflies live in humid air environments such as farmland waters, mountain waters, and reservoir waters. Because these environments have many aquatic plants and plankton, which can provide rich food for dragonflies, and their larvae also need to develop in water, so a humid environment is conducive to the reproduction and growth of dragonflies. dragonfly: It is a general term for invertebrates, insects, Odonata, Anisoptera. The base of the hind wings is slightly larger than that of the forewings, and the wing veins are slightly different. When at rest, the four wings are spread out and laid flat on both sides. The larvae are short and thick, with rectal gills and no caudal gills. Dragonflies are carnivorous insects. They prey on flies, mosquitoes, leafhoppers, horseflies, midges, small butterflies and moths, and many other agricultural, forestry and animal husbandry pests. Dragonflies are an important natural enemy insect that is beneficial to humans. "Dragonflies skimming the water" is a biological characteristic of dragonflies that lay their eggs in water. |
<<: What is the beautiful meaning of dragonflies? What do dragonflies eat? What do they drink?
>>: Teach you how to distinguish between antibiotics and anti-inflammatory drugs
Cholelithiasis is a digestive tract disease with ...
Pelvic effusion is a very common female gynecolog...
1. Sitting for a long time Sitting in a chair all...
For girls who have experienced their first menstr...
Many women have some problems before their menstr...
We all know that every year on New Year's Eve...
Anxiety disorder is a neurotic disorder character...
The decision to abort a child is always painful, ...
I believe that many girls have had this experienc...
Mild chronic cervicitis is a common female diseas...
Abortion is a measure people take when they have ...
Generally speaking, married women will have some ...
The amniotic fluid of pregnant women is the envir...