The secondary screwworm, Cochliomyia macellaria, (adult male).
Although this species can be found throughout the United States, it numbers are
being limited by the intense competition with the introduced species Chrysomya
rufifacies (see below).
One of the hairy maggot blow flies, Chrysomya rufifacies (adult
female). This species has been recently introduced into the United States. The
larvae of this species are both predatory and cannibalistic. They often consume the
larvae of other fly species and are commonly the sole species recovered from decomposing
remains in the southeastern United States.