Separation of trap-collected adults of Anopheles atropos from species of the quadrimaculatus complex.

The presence of a moderate- to large-sized patch of dark scales on the anterior surface of the fore coxa of Anopheles atropos can be used to separate this species from species of the Quadrimaculatus Complex collected in coastal areas of the United States. Identification of specimens is possible even if they have been collected in traps and are rubbed and faded.