Cicadellidae, formerly known as Cicadellidae, is the general name of Cicadellidae animals, belonging to Cephalopoda-Insecta-pteropoda-Hemiptera (now Ceratoptera). More than 2000 species have been found so far.
Isoptera means that the first pair of wings and the second pair of wings are made of the same material (different from beetles, locusts, etc.). ), and besides cicadas, aphids, planthoppers and scale insects are also common. Cicadas stick their stinging beaks into trees to absorb liquid, instead of eating dew as the ancients thought.
Cicada is unique among insects, with only three stages: egg, larva and adult. So the so-called cicada pupa is actually a misinformation of silkworm pupa, and cicada has no pupa in life.
Adult cicadas only sing to attract females to mate. Most cicadas die after mating, so cicadas only sing in summer. Females lay eggs in the bark. When the larvae break out of their shells, they will lie dormant in the soil at the roots and suck the juice from the roots for a living. Hibernation time varies from species to species.
Some people also want to ask, why can't you hear it in summer nights? This is because when the temperature and luminosity drop, the activity of cicadas will decrease, so it is not easy to hear cicadas at night.
Due to the limitation of cognition, it is often praised by poets and poets to express noble feelings. In the Tang Dynasty, Yu Shinan's "Chuisui drinks clear dew, and the flow rings out sparse tung; It's not the autumn wind that keeps you from talking loudly. " Is the representative of this understanding.
In fact, cicadas are big pests of trees. Its larvae hatch from the eggs and stay on the branches, and the autumn wind blows it down. As soon as they get to the ground, they immediately look for soft soil, drill to the edge of the roots and suck the sap of the roots to survive. The time ranges from two to three years to more than ten years. From larva to adult, it takes five molts, four of which are underground, and the last one is to get out of the soil, climb to the tree, shed its dry yellowish shell (this is the cicada shell), and then become an adult.