There are several types of water centipedes, what are water centipede insects

Both. Water centipede is a collective term for larvae of the dragon lice family. The body is long cylindrical, with a pair of large jaws like pincers, a slightly flattened head, and 6 black single eyes on each side.

The antennae are 4 segments, the trunk is 11 segments, and the first 3 segments each have 1 pair. The last 2 segments are hairy, and the end has 2 tail hairs. The body color is initially grayish-white, and later molts and grows, and the body color is lighter.

It is about 3 cm long and often hangs upside down, leaving the tail above the water for breathing. The adult dragon lice is oval, 4 cm long and 2 cm wide, with yellowish brown edges and dark brown body color, 1 pair of compound eyes, 2 antennae, and 3 pairs of feet. During the day, it lurks at the edge of ponds and paddy fields, and often flies at night, feeding on small aquatic animals such as small fish.

The water centipede can not be said to have several kinds, it can only be said that it has many aliases, also known as centipede grass, headless thick incense, three viburnum grass, golden button grass, scattered cold grass, headless thick incense, etc., which are distributed in most areas of our country, which are mainly concentrated in Jiangsu, Anhui, Zhejiang, Fujian, Jiangxi and other places. The water centipede contains a certain amount of volatile oil and vitexin and other substances, and the water centipede has a pungent taste and a slightly warm nature, which is also a relatively common Chinese herbal medicine in our lives, mainly used in cold, cold, cold, headache, musculoskeletal pain and so on.

There are two kinds. Water centipedes, also known as water clips, are larvae of dragon lice. It is an aquatic insect, and both adults and larvae are carnivorous, so it is very harmful to fish fry. The water centipede has a long cylindrical body and a pair of pincer-shaped jaws, which resemble centipedes.

Water centipede. Aliases Golden Button Grass, Trivid Grass, Sanhan Grass [Sichuan], Ball Grass, Malaria Grass, Taurus Grass.

There are two kinds, one is an animal, which is a general term for the larvae of the dragon lice family, and the other is a medicinal herb, which is named because of its slight shape like a centipede.

There are six species of water centipedes in China and about 60 species in the world.

Water centipedes, also known as water clips, are larvae of dragon lice. It is an aquatic insect, and both adults and larvae are carnivorous, so it is very harmful to fish fry.

1. Hydroids: In their breeding period, they devour a large number of fish fry, which is more harmful and generally attached to stones, aquatic plants, tree roots or other objects at the bottom of the pond.

Prevention and control: remove aquatic weeds, tree roots, stones and other debris in the pond water to make it impossible to survive; If it happens, the whole pool will be sprinkled with the vanguard.

2. Beetles: often nest and inhabit in the mud at the water's edge, live in seclusion in the nest during the day, and come out at night or dusk to forage for food and prey on a large number of fish fry.

3. Algae: A large amount of nutrients in the pond are consumed to thin the water quality and affect the normal reproduction of plankton. When reproducing in large quantities, it seriously affects the activity of fry, and the fry are often entangled in filaments to death.

Prevention and control: 1. Change water frequently. Every 1-2 years, the pond should be cleared and the water should be changed for 1 time, and attention should be paid to choosing high-quality water sources.

2. In the daily feeding feed, try to feed the granular feed with a high utilization rate to avoid polluting the water body by feeding powdered feed.

4. Water axe: flat and slender, 35-45 mm long, yellow-brown body. They stab the fish with their mouths, and simply suck the blood and kill the fry.

Five, reed, water centipede: is the larvae of dragon lice, in May and June when a large number of breeding, 1 water centipede can eat more than 10 fish fry overnight, very harmful.

Prevention and control: use bamboo and wood to build a square or triangular frame, place a small amount of kerosene in the frame, light an oil lamp or electric lamp when it is dark, and the water centipede will tend to the light and suffocate to death after contact with kerosene.