Do flies sting people?

Flies belong to Muscidae, a family of Arthropoda, Insecta, Winged Subclass, Diptera and Circadian Subclass. Insects in this family are usually called flies. About 3000 species are known all over the world, and about 500 species are known in China. Because it is easy to breed artificially, it can be used as poultry feed and toxicological test material. Adults can spread diseases such as cholera, typhoid fever and dysentery, and are important health pests, such as houseflies.

morphological character

Adults are medium to large, gray, gray-black or metallic, and the body surface is covered with bristles and hair. The head is big and can move. Compound eyes are developed, usually leaving the eyes, and a few kinds of male insects are receiving eyes. The antenna is 3 knots, pinnate. The beak is soft. The mandible must be rod-shaped, or flat on the side and spoon-shaped at the end. There are often black longitudinal stripes 4 or black wide stripes 2 on the chest; Generally, the lower side piece has no bristles and only a small amount of loose hair. M 1+2 veins have large wings and well-developed axillary leaves at the end, which are often curved or angled forward, approaching R4+5. The pulse Cu 1+an 1 (the sixth longitudinal pulse) did not reach the trailing edge of the wing. The abdomen is hairy, and the valve is on the 2-8 backbones. There are sometimes variable spots on the abdomen.

Larvae is cylindrical, with sharp front end, flat back end and small front petals, each petal has 6-8 protrusions. The rear valve is semicircular, and each valve has three valve cracks arranged radially.

This family is divided into several subfamilies, most of which are non-bloodsucking, while coccidia subfamily is bloodsucking. The main difference between these two types is mouthparts. The mouthparts of coccidia are firm, straight, slender and needle-like. When at rest, they protrude forward and cannot be retracted into the mouthparts nest, so they are suitable for piercing and sucking. Non-blood sucking mouthparts are soft, can bend and shrink into the mouth socket at rest, and have developed lips, which are suitable for sucking.

biography

Totally perverted. The egg is spindle-shaped with two obvious longitudinal ridges. The eggs of Musca domestica are stalked, and the eggs of Musca domestica are lateral. Larval development goes through three stages. At the age of 1 year, the anterior valve is missing and the posterior valve has 1 crack (rarely 2 cracks). The fragment of oropharyngeal bone is simple, the anterior flap appears at 2 and 3 years old, and the posterior flap has 2 cracks and 3 cracks respectively (rarely 3 cracks). 1 and 2 are young. 1 instar, even some species of 1 and 2 instar are completed in eggs, and the hatched larvae are 3 instars. Mature larvae generally have a conical front end and a truncated or circular rear end, while the rear ends of Lepidoptera, Lepidoptera and Lepidoptera are more or less conical, and the posterior petals are located at the end. The mature larvae pupate in the hard skin of the third instar larvae.

Living habits

Adults are classified according to their habitats, including residential, semi-residential, parent animals and wild fly species. The feeding habits of adults are extremely complex, and most of them are saprophytes and dung eaters. For example, the adults of stinkbug, Rotifer and Silkworm like fresh feces and other rotten organic substances, and some kinds of flies like to suck the wounds of people and animals, such as the blood of cattle bitten by other insects. Stygeromyia of Coccidinae sucks blood at dusk, while other groups suck blood during the day. A few species of adults are predatory, such as Heliomyces and Heliomyces, which prey on the suborder Ceratoptera, while the adults of Heliomyinae often live on plants and near waters, preying on mosquito larvae, pupae and adults. Adults generally lay eggs on the surface or surface cortex of decaying materials in larval development sites, and some species lay eggs on the ground, upper layer or the surface of feces next to them. The eggs laid are often piled up in small piles. Larvae also mainly feed on animal droppings and decaying organic matter.

harm

There are many kinds of Muscidae, which are distributed all over the world. Among them, houseflies are the most widely distributed and have the largest number. It is a vector insect that spreads diseases such as typhoid fever, dysentery, cholera, plague and anthrax (livestock). Some fly maggots are parasitic in human or other animal tissues, causing maggot disease. Some bloodsucking adults suck the blood of domestic animals and can spread trypanosomiasis.