Carrot Rust FlyAdult Carrot Flies are 4 to 5 mm, and have a black thorax and abdomen. Their legs are yellow except for the tarsi which are darker. Their abdomen is elongated and pointed in the female. Their eggs are very small, in fact they are barely visible and hidden in the soil, singly or in groups. Larva are elongated (6 to 7 mm), shiny and white-yellowish. Pupa are brownish, barrel-shaped. The Carrot Fly overwinters as a pupa. The adults appear over an extended period, from the end of April/beginning of May until July.
Attacked carrots are stunted; they frequently rot and acquire a bitter taste.
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