Real Dictionary

Mediterranean fruit fly in American English
a small, black and white, irregularly banded two-winged fly, Ceratitis capitata, of many warm regions, that damages citrus and other succulent fruit crops by implanting eggs that hatch into maggots within the fruit
a small, gall-forming, two-winged fruit fly (Ceratitis capitata) whose larvae infest and feed on many kinds of crops, esp. on citrus fruits

Mediterranean fruit fly in British English
noun: a species of dipterous fly, Ceratitis capitata, having marbled wings, whose maggots tunnel into fruits such as citrus, peach, and vine in the Mediterranean area, South Africa, and elsewhere: family Trypetidae