green bottle fly
US /ˌɡriːn ˈbɑːt̬.l̩ flaɪ/
UK /ˌɡriːn ˈbɑːt̬.l̩ flaɪ/

1.
a common blowfly (Lucilia sericata) with a metallic green body, known for laying eggs on carrion and sometimes on living animals, causing myiasis
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The forensic entomologist identified the larvae as those of the green bottle fly, indicating the time of death.
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Farmers often use traps to control populations of the green bottle fly, which can infest livestock.