Dragonflies represent auspicious meanings in folklore, so dragonflies cannot be driven away when they fly into your home. In addition, dragonflies are beneficial insects that can not only eat mosquitoes and other pests, but also drive away pests. Have you learned it? We must protect insects that are beneficial to us humans! The following is a sharing for you about why dragonflies fly low on cloudy days? To help you learn more about insects. Contents of this article 1. Why do dragonflies fly low on cloudy days? 2. Is a dragonfly an animal? 3. What does the red dragonfly symbolize? 1Why do dragonflies fly low on cloudy days?Before it rains, the air is full of small water droplets. Many small flying insects (those that are so small that they are hard to catch with the naked eye) have their wings covered with small water droplets, making it difficult for them to fly high. Dragonflies take advantage of this opportunity to fly low to catch small flying insects for food. Therefore, the low-flying dragonflies also indicate that it is about to rain or that the air is humid. Dragonflies are insects with incomplete metamorphosis. The larvae "water scorpions" live in water, breathing with rectal tracheal gills and hunting with their highly developed face covers. Generally, they molt more than 11 times and it takes 2 years or more to crawl out of the water along the water plants and then molt for the last time to become adults. Larvae can prey on mosquito larvae or other small animals in the water, and sometimes they even cannibalize each other. Both adults and larvae are carnivorous and mostly eat pests. In addition to preying on mosquitoes and flies, some adults can also prey on butterflies, moths, bees and other pests, making them beneficial insects. They like to fly back and forth at low altitudes before it rains. 2Is a dragonfly an animal?Dragonflies are arthropods. Invertebrates, Odonata, Anisoptera. They are generally large in size, with long and narrow wings, membranous, with clear wing veins, and extremely sensitive vision. They have three simple eyes and a pair of short, thin antennae. Their legs are thin and weak, with hooks on them, which can catch pests while flying in the air. The larvae (nymphs) develop in water and breathe in the water with rectal tracheal gills. Generally, they have to molt more than 11 times, and it takes 2 years or more to crawl out of the water along the water plants, and then molt for the last time to become adults. 3What does the red dragonfly symbolize?The red dragonfly has two meanings. One is to symbolize the elimination of pests, and the other is to represent happiness, auspiciousness, and "victory". In folk culture, dragonflies represent auspicious meanings, so dragonflies cannot be driven away when they fly into your home. In addition, dragonflies are beneficial insects that can not only eat mosquitoes and other pests, but also drive away pests. The red dragonfly has an abdomen about 3 cm long and hind wings about 4 cm long. The mature male dragonfly has a scarlet body color and transparent wings; the female is yellow and is distributed in low-altitude areas. Red dragonflies mainly appear from April to December and often move around in the grass near water areas. They are one of the common dragonflies. Red dragonflies are the general name for the genus Red Dragonfly in the family Odonata. There are about 21 species, including semi-yellow red dragonflies and summer red dragonflies. The female adults and immature males of this dragonfly are yellow, but the males will slowly "change color" during the maturation process, from yellow to red. Previously, people thought that this color difference between the sexes was to facilitate identification during reproduction. |
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