"It's come to this point, shall we talk?"

Chang Rong looked at Duan Chaonuan's clear eyes, and guessed in his heart what she was going to say, but Chang Rong didn't plan to give her a chance to say anything.

At least not for now.

"I know that when that person showed you the information on the praying mantis, you had a lot of confusion about this issue, and I also have some information here, I hope you will read it and we will do other discussions."

Duan Chaonuan looked at the one opposite and took out a pile of materials from behind him, and the photo of the big praying mantis eater came into view.

I don't know how this Duan Chaonuan felt nauseous in my stomach, feeling as if I had seen something I shouldn't see, and I didn't want to know this time.

But compared with this disgusting, it is more serious, Duan Chaonuan is really a curious baby, and what can be done is a deposit of 100,000 yuan, and there is a heavy thank you after the fact.

The intuition in my heart told me that this matter was definitely not so simple, and maybe it was even more dangerous than Sun Yuqian's incident.

But......

Duan Chaonuan thought of this, looked up at the man opposite him, and the man opposite him did not dodge, let himself look at it generously, "This is about the characteristics of the various stages of the growth of the praying mantis, as well as the different appearance states of the growth period, etc., you read it first, I am explaining to you." "Okay

After hearing this, Duan Chaonuan, in order to find out what was going on with him, had to resign himself to taking the pile of information, and then began to look at it intently.

Praying mantis, also known as knife mantis, is an invertebrate insect that is a carnivorous insect. In ancient Greece, people regarded the praying mantis as a prophet, and it was also called a prayer insect because the front arms of the praying mantis looked like a praying maiden.

In addition to the polar regions, it is widely distributed all over the world, especially in the tropics. There are about 2,000 species known in the world.

The life cycle of the praying mantis is completed within one year, and it goes through three stages of development in its life: egg, nymph and adult, so it belongs to the gradual metamorphosis of incomplete metamorphosis. The nymph stage sheds skin 7~11 times, and reaches the insect stage after 8~12 instars. The increase or decrease of age is affected by the environment and the amount of food.

1. Oviposition period, in mid-July every year, most species have entered the adult stage, in late August through male and female mating, female insects choose tree branches or walls, fences, stones, stone crevices to lay eggs. During oviposition, the left appendage gland first secretes foamy protein substances at the opening of the genital cavity, and the right appendage gland secretes diphenolic substances, so that the secreted protein substances coagulate into a layer of harder shell and cover the outside of the egg mass, forming an egg sheath. The number of egg sheaths, the size of the egg sheath and the number of eggs in the sheath of a female locust vary depending on the species, and generally 1~4 egg sheaths can be laid. It takes 2~4 hours to complete each egg sheath, and the number of eggs in an egg sheath ranges from 40 to 300. The first egg sheath is white or milky white, soft, and becomes earthy yellow or yellow-brown after 5~10 hours, and some become black-brown. Those that are born on mulberry branches are called mulberry crickets. Because the egg sheath has different sizes, lengths and widths, roundness and flattening, and colors, it has folk names such as Yi hat, wild fox snot, and urine dog. All kinds of praying mantis use egg sheaths to protect egg cells through the cold winter. At the beginning of June of the following year, the overwintering eggs begin to hatch, so there is a saying of "midsummer praying mantis", which continues until early July, and the hatching time of the eggs is early and late, in addition to the temperature and humidity of the year, it is also related to the intensity or length of light received by the spawning place.

2. Nymph stage. After the egg develops into a nymph through the embryo in the sheath, it rises to the adult to lay eggs by the peristalsis of the body and the swelling force of the egg, and hatches out of the egg membrane from the hatching left when the sheath is made, and with the help of the gelatinous filament secreted on the tenth web plate, the egg shell and the insect body are adherently suspended, sometimes it can be pulled into a long string of more than 10 pieces, and the individuals who hatch early soon take advantage of the wind to grasp the surrounding objects with their feet and run to each other, this natural phenomenon is also an instinct of the praying mantis to avoid cannibalism in life and preserve its own species. The hatching time of eggs is mostly from 4 o'clock in the morning to 8~9 o'clock (Chinese praying mantis); The broad-bellied cockroach is mostly in the peak hatching period at about 18 o'clock in the afternoon; The thin-winged mantis is in its peak season at 9~12 o'clock. The 1~2 instar insects have strong cannibalism, and the survival rate is generally only 10%~20% in the natural environment. This cannibalism phenomenon may be an interspecific mechanism for the number of praying mantis insects to be controlled to a certain number, and the generation of this interspecific mechanism is related to the hunger tolerance of young nymphs, because the first and second instars die in 4~5 days in the case of complete lack of food, and the later nymphs can only maintain a life period of 11~18 days in the case of lack of food, and the nymphs are similar to the adult morphology, but the feet of the nymphs at different instars have wing buds from small to large, and after the end of the instar is completed, two pairs of large wings that play a flying role are grown.

3. Adult stage, 7~10 months every year is the period of occurrence of adults, generally male adults mature more than 10 days earlier than females, and can mate after 10~15 days after emerging into adults, the mating time is 2~4 hours, and the pre-mating period is the highest peak of the mantis feeding. When food is scarce, females attack males and are eaten as prey, which is known as the phenomenon of "wife and husband". This behavior in life is explained as due to the fact that the male's pharyngeal ganglia can secrete a hormone that promotes its lateral movement and the gripping movement of the external abdominal genitalia, therefore, the female preys on the male and often eats the head first, which can destroy the male's pharyngeal ganglia, which is conducive to the success of the contact between the two sidesAs long as the male mantis can grasp the timing and quickly complete the mating process with the female, it can also survive. From the above explanations, female eating males is mainly a natural behavior that is based on the interrelationship between marriage proposal, mating, and nutrition, and the female is responsible for reproducing offspring.

4. Eating habits, praying mantis is a terrestrial predatory insect (carnivorous), all small species of insects can be preyed on by praying mantises, especially flies, mosquitoes, moths and butterflies, eggs, larvae, bare pupa, adults are its suitable prey. Even large insects such as cicadas and flying locusts are also their prey.

Seeing this, Duan Chaonuan pursed the corners of his lips, feeling that this guy's information was not much different from the information Tang Kang gave him, and he thought it was some major gossip, and he was eager to try it.

"You focused on the adult stage, what did you find?"