"Nothing, go on!"

Just this stinky face, Duan Chaonuan looked at this Chang Rong, just that stinky face that can't be stinky anymore, it really can't be too much.

It's Duan Chaonuan who resisted the urge to rush up and beat people, and then under this pressure, continue to read.

"Exterior features!"

"The praying mantis is the largest of the insects, with a body length of 55 to 105 mm, and the African praying mantis is the largest in the world, with a streamlined body, mainly green, brown, and spotted; The signature feature is the presence of two "broadswords", the forelimbs, with a row of hard serrations and climbing suction cups at the ends of the hooks. The head is fan-shaped, smaller; The compound eye is prominent, large and translucent, mainly yellow-green, black in the light at night, monocular, with 3 small dots between the two eyes, that is, monocular; antennae elongated; The neck can be rotated 180 degrees; Chewing mouthparts with a strong palate. The leg and tibia of the forefoot have a sharp spine, and the tibia is sickle-shaped, often folding towards the leg joint, forming a forefoot that can capture prey; The forewings are gentle, covering all the body as covered wings, the hindwings are thinner than the forewings, the edges are transparent, the middle is radial purplish-red, stretched out to show a fan-shape, and the forewings converge and merge with the forewings at rest; Abdominal hypertrophy. The forefoot is sharp and good at catching, and the middle and hind feet are suitable for walking, but sometimes the forefoot is also used to maintain balance, and the development is metamorphosed. ”

Reading this, Chang Rong interrupted this person's emotionless recitation, and then successfully took over the topic.

"Haven't thought of anything yet?"

What should be the connection?

There has to be something related, Duan Chaonuan thinks about this information, he is really about to be read and vomited, and he vomits directly, and then the whole person may be that kind of terrible, dizzy and dizzy, how to look at it!

"What should be the connection?"

Yes, people don't know what's going on.

Chang Rong thinks that this seems to be the brain stuck in front of him, or the kind of crash, and he fell directly to the posture of BC!

Maybe it's not as good as the age of the dinosaurs!

"Cheng, you keep reading, keep reading!" Chang Rong waved his hand and waved his hand to continue, Duan Chaonuan glanced at this person inexplicably.

"Distribution!"

"In addition to the polar regions, it is widely distributed all over the world, especially in the tropics.

In summer, praying mantis can often be seen under the street lamps of the city because of their phototaxis. ”

"Phototaxis?"

"And phototaxis?"

Duan Chaonuan's voice startled Chang Rong, "You are quieter, you know quietly, don't forget where we are!" ”

"The first time I found out, praying mantis still has phototaxis?"

"There's so much you haven't noticed!"

"Huh? What did you say? "Book bar

Duan Chaonuan said that he didn't hear anything about this person, but Chang Rong didn't say it again, and continued to wave his hand, "You keep reading!" ”

But Duan Chaonuan really didn't want to read it.

"Can't I just stop reading?"

Chang Rong looked at this person's bitter melon face, spoke righteously, and told her firmly, "No, keep reading!" ”

"Why don't you read it, I'll listen?"

"No way!"

Cheng, Duan Chaonuan didn't know, why was he still so obedient, why was he like this, and he had to continue to listen to this matter?

"Alright then!"

I think of myself, it seems that there is still a deal in the hands of others, this eater has a short mouth, and he takes other people's soft hands, so forget it!

Just grit your teeth and stomp your feet, so be it!

Don't say anything.

"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 the 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. ”

"First, the oviposition period, in the middle of July every year, most species enter the adult stage one after another, and in late August, the female chooses tree branches or walls, fences, stones, and 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. ”

"Isn't that how this praying mantis grows?"

Duan Chaonuan just didn't understand, she read it in one go, where is the meaning of this spawning period, what is it?

What's so nice about a growing process!

"Go on."

Also reading?

"Go on!"

"Oh."

Duan Chaonuan nodded, still succumbing to the fact that he had something to ask for others.

"One, the 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. ”

"No, I really don't want to read it!"