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

1.
mosca de los cuernos
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.
El ganado estaba constantemente molestado por las moscas de los cuernos, lo que les hacía perder peso.
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Farmers use various methods to control horn fly infestations.
Los agricultores utilizan varios métodos para controlar las infestaciones de moscas de los cuernos.