The body surface of wasps in adult stage also has the standard characteristics of insects, including head, chest, abdomen, three pairs of feet and a pair of antennae. At the same time, its single eye, compound eye and wings are also the characteristics of most insects. In addition, there is a degenerated fallopian tube hidden at the end of the abdomen, which is a poisonous bee needle. Adults are mostly black, yellow and brown, or a single color. With different sizes of carving or smoothness. The fluff is usually short. Feet are longer. With developed wings, it flies very fast. When resting, the front wings are folded vertically to cover the back of the body.
Toxins and stings:
The venom of wasp can be divided into hemolytic toxin and neurotoxic toxin, which can cause the functional failure of human liver, kidney and other organs, especially it can sting human blood vessels, which is especially dangerous for people with allergic constitution. The stings of wasps are covered with a layer of non-toxic glands, which can attack or sting people many times.
Second, living habits:
Wasps are active insect groups that live in groups. Generally speaking, the species of Hemiptera have no nests and live freely. When laying eggs, the female bees build a mud house or choose a suitable bamboo tube to lay eggs in it, and store the larvae or spiders of other insects that have been stung after being caught. One room and one egg are sealed separately, and the larvae hatched from the eggs feed on the stored prey. After pupating into a bee, it bites through the nest and flies out.
Other kinds of wasps live in nests all their lives. There are differences between queen bees, worker bees (or worker bees) (females) and drones. The queen bee is a female bee that has mated and fertilized with a drone after the previous autumn. They store sperm in seminal vesicles and use them many times a year. Drones will die soon after mating.
Generally speaking, when the temperature is 12 ~ 13℃, wasps will sting people, start nesting at 16 ~ 18℃, and overwinter when the temperature drops to 6 ~ 10℃ in autumn. In spring, the temperature is high at noon, and activities are the most frequent. In summer, it is hot at noon, and activities are often suspended. Go back to the nest at night. Have the habit of liking the light. When the wind exceeds level 3, the activity stops. When the relative temperature is 60 ~ 70%, it is most suitable for activities, and it stops going out in rainy days. Hornets like sweet substances. Within 500 meters, the wasp can clearly identify the direction and return to the nest smoothly. Over 500 meters, they often get lost and forget to return.
Extended data
Advantages and disadvantages:
(A), harmful aspects
(1), harm to people and animals
Except grubs, wasps generally live in nests, ranging from dozens to hundreds, from thousands to 5,000 to 8,000. When people and animals come into contact with or encounter nests, they will attack in groups and hurt people and animals. In severe cases, it will cause death.
(2) Harm to bee reproduction
Wasps are natural enemies of bees. Some large wasps often fly to cities, villages, houses and apiaries to catch bees. Most of the captured bees are used to feed larvae, and some are used as slaves.
(3) Harm to fruits and forests
Ruins often haunt forests, villages, farmland, orchards and vegetable gardens, feeding on young leaves of plants and biting off fruits and tomatoes. The bitten fruit is infected by pathogenic bacteria, which leads to the decrease of fruit and vegetable yield and affects the normal growth and development of trees.
(ii) beneficial aspects
(1), in biological control
Wasps can be used to control many pests in crops, forests and fruit trees.
(2), in medicine
According to related reports, wasp venom has the function of anti-radiation and arthritis treatment, and has the potential of high-tech development. Once broken, its value is immeasurable.
(3) Food
There are 18 amino acids in wasps, among which 8 essential amino acids in dietary protein are found in wasps, and the content is particularly high. It can be used as nourishing food and traditional Chinese medicine.
Baidu encyclopedia-wasp
Baidu Encyclopedia-Hu Feng