horn fly
US /ˈhɔːrn flaɪ/
UK /ˈhɔːrn flaɪ/

1.
mosca-dos-chifres
a small, dark-colored fly (Haematobia irritans) that feeds on the blood of cattle and other livestock, often found clustered around the horns, back, and belly of the animals
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The cattle were constantly bothered by horn flies, causing them to lose weight.
O gado era constantemente incomodado pelas moscas-dos-chifres, fazendo-os perder peso.
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Farmers use various methods to control horn fly infestations.
Os agricultores usam vários métodos para controlar infestações de moscas-dos-chifres.