Locusts, also known as leeches, belong to the pharyngeal leech order, leech family.
Leeches are mainly characterized by a flattened fusiform shape, with most of the links; the back of the black-brown or black-brown. The body of the leech is slightly flattened, and at first glance it looks like a cylinder, with a length of about 2 to 15 centimeters and a width of about 2 millimeters to 1.5 centimeters. The back of the ant is green with black, with 5 yellow longitudinal lines, the ventral surface is flat, gray-green, without miscellaneous color spots, the overall ring pattern is remarkable, the body segments are composed of 5 rings, each ring is similar in width.
Ant locust dorsal surface dark green, with 5 longitudinal lines, sucking blood, from the pharynx through the esophagus and stored in the entire digestive tract and blind sac. Ant locust body segments have excretory pores, opening in the ventral side. The male and female genital pores of the ant locust are 4 rings apart, each opening between the rings. Ant locust anterior sucker is easier to see, the posterior sucker is more prominent and strong adsorption.
Living environment
Leeches live in rice paddies, ditches, shallow dirty pits and ponds, etc., sucking the blood of humans and animals, action is very agile, will be a wave swim, but also for inchworm type of moving. Every spring that is active, June-October for its spawning period, often hibernating in the winter near the shore in the wet mud, do not eat and do not move, strong ability to survive.
Leeches are cold-blooded annelids that can grow and reproduce in both the north and south of China, and they mainly live in freshwater reservoirs, ditches, paddy fields, lakes and marshes, and are most abundant in ponds rich in organic matter or unpolluted streams. Growth temperature of 10-40 ℃, the northern region below 3 ℃ in the soil into hibernation hibernation period, the following year in March-April higher than 8 ℃ or so out of the sting activity.
Leeches are omnivorous animals, sucking animal blood or body fluids as the main way of life, often in the water plankton, insects, mollusks as the main bait, artificial conditions to a variety of animal offal, cooked egg yolks, with the feed, plant residues, freshwater snails and shellfish, miscellaneous fish, earthworms and other bait.