A small two-winged fly (Ceratitis capitata), a native of the Mediterranean countries but now widely distributed in warm regions, which can cause great damage to citrus and other succulent fruit crops when present in large numbers. It is black and white and irregularly banded. It lays eggs in ripening oranges, peaches, and other fruits; when the eggs hatch into larvae (maggots) inside the fruit, they cause the fruit to decay and fall, and make the fruit unsaleable. It is also popularly called the medfly.