The Fly, is the insect more difficult if not impossible to eliminate for the speed that the maggots have to attain the adulthood, and only ten days for being at their turn capable of reproducing, besides, the Flies do not have the difficult to lay the eggs into every organic and decaying substance, and a couple of flies in the period between may and September if in optimum conditions can lay up to four thousand trillions of flies, every group of eggs that a fly lays is of 125-150 eggs.
For this reason do not exist a place in which live the human being where there is not the Fly, and there is not any substance or living being, animal or vegetable, that not comes into contact with this insect.
Besides exist different species of Flies for dimensions, forms and habits; there are flies that feed of animal corpses, those that feed of trashes and lay on faeces and decaying organic substances, Flies that suck the blood, animals pests, birds and plants and other insects, at the end exist Flies that do an important job of impollinating the plants.
Exactly for the continuous rapid and strenuous movement at the research of food and sites where to lay their eggs, the Fly is one the more polluting insect of nourishments and dangerous for the diffusion of epidemic disease as the cholera, plague, leprosy, typhoid fever etc.
The Flies, as the mosquitoes and the horse-flies, belong to the category of DIPTEROUSES, there are around 100.000 breeds and are divided into families and most common that lives around us are:
- Domestic Fly: Muscidae
- Black Fly: Simulidae
- Meat Fly: Sarcopagidae
- Horsefly: Tabanidae
- Cheese Fly: Phiophiliadae
- Fruit Gnat: Drosophiliadae
- Moth: Psychodidae
The most common fly, grey coloured with dark stripes distinguished on the chest; it has got a sucking oral apparatus that can feed of every kind of food, either solid or liquid; the fully-grown flies are attracted into our houses for the presence of human being and pets; the dumps, the filth, the food for animals, fruit and vegetable are their larval sources and place of meeting for fully-grown Flies.
Between the breeds more prolific, the female of the common Fly can lay every 3-4 days groups of 75-110 eggs.
The common Fly is not a direct risk for the human being but can be anyhow vehicle of infections, viruses, bacteria; then knowing the biological cycle of this irritating insect can help us to eliminate from our houses and neighbourhood, every possible substrate that can be a larval source, particularly in the hottest periods.
Usually the common Fly comes into our houses in the coldest hour of the day, but in the hottest it lives outside.
The Fannia canicularis belongs to the same family of the common Fly and it is very alike, but its appearance in the environment starts from the beginning of the springtime, is more slender and little than the common Fly, it cannot lay on our table but flies zigzag and circle without laying.
This breed unlike the common Fly lay the eggs on the faeces of the animals and decaying vegetables.
The Stomoxis calcitrans is like the common Fly but with the abdomen larger with rounded spots and on the chest a place clearer, it can found in the rural areas.
The meat-fly is bigger, has got a sucking apparatus and a sturdy scent and it is very sensible to the aroma of the meat to smell it in hundreds of meters of distance. The fully-grown meat-Flies has like junction our houses but at the same time and above all the butcheries, the slaughterhouses, the fishmongers, the dumps and corpse of animals.
The Sarcophaga carnaria is longed 10-14 mm, is grey coloured with darker stripes lengthwise on the prothorax, the female do not lay eggs, they hatch before being laid so they lay directly upon proteic substances and foods groups of 30-60 worms infecting and rendering them dangerous if ingested.
These same worms are also used by the fishermen as bait, also known as “bigattini”.
The Calliphora spp. is longed 10-12 mm is the fly blue metallic coloured with the flight fast and noisy.
The Lucilia spp. is longed 10 mm and golden green coloured.
This fly with the chest dull grey coloured and a spot more clearly near the head and a chunky abdomen, has got a sucking and sharp oral apparatus.
The female of this Fly lay in the space of two weeks 300-400 eggs on poultry manure, manure mixed with straw, food for animals and on the lawn.
The fully-grown Flies of this breed meet themselves usually in the rural houses in the country, in the sheds, in the kennels.
FLIES HARMFUL FOR THE FARMING
These three Flies are very similar to the house-fly but more little, about 1/3 of the house-fly but can cause heavy damages to the agriculture if are not taking the preventive measures for control and pest control.
They attack mainly fresh fruit through an ovipositor placed on the abdomen and insert in the peel of the fruit the egg from which will go out the worm or the grub that invading the pulp will rot and than fall down the fruit.
It is the Fly more damaging because it attacks every type of fruit-bearing plant: peach, apple, pear, apricot, fig, mandarin, orange etc.
Another sight that renders this Fly harmful more than the other two is the capability to achieve 6-7 procreations during the maturation of the fruit from June to October, paying back the essential the permanent treatments of the plants with insecticidal substances.
CHERRY FLY AND OLIVE FLY
They are called so because attack only the fruit of only these two plants.
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