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screwworm

   Also found in: Dictionary/thesaurus, Medical, Wikipedia, Hutchinson 0.01 sec.
screwworm: see blowfly blowfly, name for flies of the family Calliphoridae. Blowflies are about the same size as, and resemble, the housefly; because they are usually metallic blue or green they are also called bluebottle or greenbottle flies.
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screwworm

Any of several North and South American blowfly species named for the screwlike appearance of the larva's body, which is ringed with small spines. Screwworms attack livestock and other animals, including humans. The true screwworm (Cochliomyia hominivorax) and the secondary screwworm (Callitroga macellaria) develop in decaying flesh; they may also attack healthy tissue. Each female deposits 200–400 eggs near an open wound. The larvae burrow into the tissue and, when mature, drop to the ground to pupate. Severe infestations (myiasis) may kill the affected animal.



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One museum scientist's knowledge of screwworms helped stop an outbreak among cattle in Africa dead in its tracks--an outbreak that might have devastated much of the continent's wildlife.
Also use the waning moon for hunting potato leafhoppers, cucumber beetles, corn borers, mites, bean-leaf beetles, fleas, lice, ticks, screwworms and fly maggots.
Under the proposal to Parliament, government would buy millions of sexually sterile screwworm flies, which mate with the natural flies but don't produce offspring, effectively short-circuiting the pest's reproductive cycle.
 
 
 
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