In 1980, when the Mediterranean fruit fly first appeared in California, agricultural officials feared one of the region’s worst pest invasions since settlement. The medfly, as it is commonly known, can infect more than 250 types of fruits, vegetables, and nuts, and for this reason, it is considered one of the most damaging agricultural pests in the world.

In 1980, when the Mediterranean fruit fly first appeared in California, agricultural officials feared one of the region’s worst pest invasions since settlement. The medfly, as it…

While the tiny bug, about the size of a grain of rice, drew little concern when it appeared in Southern California in 1998, few expected it to become such a serious problem.…