Rhagoletis mendaxRhagoletis
        pomnella

Two host races of Rhagoletis

Species of Rhagoletis are parasitoid flies that are often specific for a single species of fruit tree: the two races here have preferences for blueberries and apples. The apple form appeared over a few years in the late 1800's in the Hudson River valley of New York state.


Text material © 2018 by Steven M. Carr