Mexican Fruit Fly
Anastrepha ludens

Mexican Fruit Fly - In grapefruit as well as many other fruits,
one female Mexican fruit fly can deposit large numbers of
eggs: up to 40 eggs at a time, 100 or more a day, and
about 2,000 over her life span - Jack Dykinga,
USDA. Agricultural Research Service. Photo Unit.
Invasive.org.