Compound eye is the main visual organ of insects, which usually occupies a prominent position in the head of insects. The compound eyes of most insects are round, oval or kidney-shaped. It consists of most small eyes, and each eye has cornea, lens, pigment cells, retinal cells, rod cells and other structures.
Compound eyes are generally hexagonal, and the number, size and shape of compound eyes of various insects vary greatly. The compound eye of male scale insects consists of only round eyes.
Extended data
Flies are active insects during the day, have obvious phototaxis and rest at night. The activity and habitat depend on the species, season, temperature and region of flies.
Good at flying, the flying speed can reach 6 ~ 8 kilometers per hour, and the highest flying speed is 8 ~ 18 kilometers day and night, but it usually moves within the radius of 100 ~ 200 meters, and most of them do not exceed 1 ~ 2 kilometers.
The feeding habits of flies are very complex, belonging to omnivorous flies, which can feed on various substances, such as human food, secretions and excretions of people and livestock and poultry, kitchen waste and plant juice.
Houseflies can excrete feces in a short time (a few minutes) after they are full. Because it often vomits and defecates, it loses more water, prompting it to eat frequently, so it is seriously polluted by eating, spitting and pulling biomass. In livestock and poultry farms, feed and drinking utensils are often polluted.
Although its life span is only about 1 month, its reproductive ability is amazing. According to statistics, a female fly can lay 500- 1000 eggs, and the offspring of a pair of flies contract as much as1900,000, which shows the great harm of flies.
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China News Network-A fully functional artificial compound eye developed in Europe imitates the fly's eye, with a wide field of vision.
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