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New World screw-worm fly

Cochliomyia hominivorax

Classification

Class
Insecta
Order
Diptera

Cochliomyia hominivorax, the New World screwworm fly, New World screwworm (NWS) or simply screwworm or screw-worm, is a species of parasitic blowfly whose larvae (maggots) feed on living tissue of warm-blooded animals. It is present in the New World tropics (and also currently found in the United States as of 2026). Of the four species of Cochliomyia, only C.

Distribution

(c) Judy Gallagher, some rights reserved (CC BY-SA), uploaded by Judy Gallagher · CC-BY-SA
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Countries in the Picchu catalog
Mexico · 7Argentina · 1France · 1