Analysis:

mantis

Mantis belongs to Mantidae, a winged subclass of Insecta. It is a medium to large insect with a triangular head and can move freely. The leg joints and tibial joints of the forefoot are prickly, and the tibial joints are sickle-shaped and often fold to the leg joints to form the forefoot that can catch prey; The anterior wing cortex is covered with wings, lacking the anterior domain, the posterior wing is membranous, and the gluteal domain is developed into a fan, which folds on the back at rest; Abdominal hypertrophy. Except in extremely cold regions, it is widely distributed all over the world, especially in tropical regions. There are about 1585 species known in the world. About 5 1 species is known in China. Among them, southern mantis, northern mantis, broad-axe mantis, Chinese mantis, European mantis and green-spotted mantis are important natural enemies of pests in agriculture, forests, fruit trees and ornamental plants in China. Mantis is very long, mostly green, but also brown or spotted. The compound eye was prominent, with 3 eyes in one eye. Chew the mouthparts, and the upper jaw is strong. Grasp the feet with the front feet, and the middle and rear feet are suitable for walking. Gradually pervert. Eggs are laid in egg sheaths, and there are 20 ~ 40 eggs in each egg sheath, arranged in 2 ~ 4 rows. Each female insect can produce 4 ~ 5 egg sheaths, which are hardened by foamy secretions and attached to branches, bark, walls and other objects. The newly hatched nymph is a "pre-nymph", and it will become an adult only after peeling it for 3 ~ 12 times. Generally 1 year 1 generation, some species parthenogenesis. Eating meat and hunting all kinds of insects and small animals can eliminate many pests in fields and forest areas, so it is beneficial. Sexual abuse and aggression, lack of food often lead to the phenomenon of swallowing snacks and females eating males. Individual species distributed in South America sometimes attack small animals such as birds, lizards or frogs. Mantis has protective color, and some are mimicry, which is similar to its environment, thus preying on a variety of pests.