Mantis, also known as knife mantis, is an invertebrate and a carnivorous insect, which is widely distributed all over the world, especially in tropical areas. There are more than 2000 known species in the world. About 147 species are known in China. Including China big knife mantis, narrow-winged big knife mantis, big knife mantis, brown static mantis, thin-winged mantis and green static mantis, mantis is an important natural enemy of agricultural pests.
Mantis is a large insect, generally 55 to 105 mm long. African mantis is the largest in the world, with a streamlined body, mainly green and brown, and various spots on it; The iconic feature is that there are two "broadswords", namely forelimbs, with a row of hard serrations, and a climbing sucker at the end of the broadsword hook. The head is fan-shaped and smaller; Compound eyes are prominent, large and translucent, mainly yellow-green.
Extended data:
Biological characteristics of mantis
1、? During the spawning period, most species gradually enter the adult stage in mid-July every year, and begin to mate in late August. Female insects choose branches or walls, fences, stones and cracks to lay eggs. When laying eggs, the left accessory gland secretes foamy protein substance at the opening of reproductive cavity, and the right accessory gland secretes diphenol, which is immediately oxidized and awakened, so that the secreted protein substance solidifies into a hard shell to cover the egg mass and form an egg sheath.
2. In the larval stage, after the egg develops into a larva through the embryo in the sheath, it rises to the point where the adult lays eggs by relying on the peristalsis of the body and the swelling force of the egg, and leaves the egg membrane and hatches out. Eggshells and worms are attached and hung with the help of colloidal filaments secreted from the tenth net, and sometimes they can be pulled into a long string of more than 10, and the individuals who hatch soon, that is, individuals who grasp the surrounding objects with their feet by the ripples of the emblem wind.
3. Adult stage: July ~1October is the successive occurrence stage of adults. Generally, male adults mature more than 10 days earlier than female adults, and they can mate in 10~ 15 days after eclosion. The mating time is 2~4 hours, and the pre-mating period is the peak of mantis feeding.
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