Cicada's shell is hard, its head is wide and short, and its black eyes protrude from its body and grow on both sides of its head. Cicada has short tentacles. It has six legs, all of which are very forward. The male cicada's abdominal muscles have a special structure. Its abdominal muscles can stretch and contract 10,000 times in one second, which is also the reason why cicadas sing brightly. Cicada, whose scientific name is cicada, will be heard in summer, especially in the hottest time, and its cry is particularly obvious and penetrating.
The largest cicada is 4 ~ 4.8 cm long and its wings are dark brown at the base. It is harmful for trees to crow loudly in summer, and it is harmful for trees to suck tree juice with acupuncture mouthparts. Larvae inhabit the soil to suck root juice.
Morphological characteristics of cicada
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 hard. 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. The front foot of nymph is used for digging, and the leg is swollen and prickly. The abdomen of cicada 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.
The above contents refer to Baidu Encyclopedia-Cicada.