**Reproduction and development The female genital flies are rotated to some extent from positions found in other insects, In some flies this is a temporary rotation during mating, but on the other, it is the permanent torque of organs that occur during the cocoon stage. This torsion may cause the anus located beneath the genitals, or in the case of 360 ° of torque, on the sperm ducts that wrap around the intestine, even though the external organs are in their usual position. When the mating flies, the male initially flies over the woman facing the same direction, but then turns to face in the opposite direction. This forces the man to lie on his back for his genitals to stick to the female flies, or the torque from the male genitals allows the male partner to temporarily stay upright.**
** This causes flies to have more reproductive ability than most insects, and at a much faster rate. Flies occur in large populations because of their ability to mate effectively and in the shortest time during the breeding season. The female puts its eggs close to the food source (as in almost ripe fruit), allowing the larvae to consume as much food as possible in a short time before it matures. Eggs hatch as soon as laid, or flies are ovoviviparous, with hatching of larvae within the parent body.**
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