Cicada has two pairs of membranous wings, basically the same shape, wide and short head, protruding forehead and lip base; Good eyesight, small compound eye, located on both sides of the head and far apart, 3 pieces of single piece. The antenna is short and whisker-shaped.
The mouthparts are slender, and there are esophagus and saliva tubes in the mouthparts, which belong to the piercing-sucking type. Chest includes front chest, middle chest and back chest, in which the front chest and middle chest are longer. All three breasts have a pair of feet, and the legs are thick and developed (if the front foot of the worm is used for digging, there are thorns).
Cicada's abdomen is a long cone with 10 abdominal segments, and the ninth abdominal segment becomes the caudal segment. The 1 and the second abdominal segment of the male cicada have sound generators, and the 10 abdominal segment forms the anus; Female cicada 10 abdominal node forms oviposition tube, which is relatively large. Larvae live in the soil, and the last larvae are mostly brown, similar to adults.
Extended data:
This male cicada can sing. Its vocal organ is located in the abdominal muscles, and it is covered with an eardrum like a drum. The eardrum vibrates and makes a sound. Because the vocal cord muscles can expand and contract about 65,438+0,000 times per second, and the cover plate and tympanic membrane are empty, which can play a role of * * *, so its singing is particularly loud.
And you can sing in different tones in turn. The male cicada keeps singing every day in order to lure the female cicada to mate. They can't hear their own songs.
The male cicadas of each species make three different songs: collective songs, which are regulated by daily weather changes and the songs of other male cicadas; Courtship before mating; The harsh sound made when caught or afraid to fly away.