Cochliomyia hominivorax

Rarity: Common

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At a glance

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Knowledge cost

4

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Resistance

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What Wikipedia says

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).

Excerpt from the Wikipedia article “Cochliomyia hominivorax”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: John Kucharski, Public domain, via Wikimedia Commons.