Larvae has a big belly and a small head, and its whole body and eyes are milky white.

1. Cicada, also known as cicada and cicada, is black and old, and its larval stage is called crawling, crawling, pulling monkeys, cicada monkeys, cicada monkeys, monkeys, beef cattle, cicada turtles, immortals or cicada turtles. It is a medium to large insect of the same order, with about 2000 species. It is 2 ~ 5 cm (0.8 ~ 2 inches) long, with two pairs of membranous wings, prominent compound eyes and 3 monocular eyes.

2. Cicada eggs are often produced in woody tissues. Once hatched, the nymph burrows into the ground and sucks juice from the roots of perennial plants. Generally, after molting for 5 times, it takes several years to mature. When the number of female insects is large, the oviposition behavior will damage the young trees. Each spawning hole has 6 ~ 8 eggs. There are more than 90 cicada eggs on a branch.

3. The cicada larvae live in the soil, suck the juice from the roots of plants, weaken the tree, make the branches die, and affect the growth of trees. Grasshopper larvae live in the soil all their lives. When it is about to emerge, drill out of the ground at dusk and night, climb onto the tree cicada, and then grab the bark to shed its skin and emerge. At the end of June, larvae began to emerge into adults, and the longest life span was about 60 ~ 70 days.

In late April and July, female adults began to lay eggs, and the peak of laying eggs was in early and middle August. Most of the eggs were laid on branches with a thickness of 4 ~ 5 mm. When laying eggs, female adults first punctured the bark with an ovipositor, inserted the ovipositor into the branches to form claw-like egg holes, and then laid eggs in xylem.