Vegetable: Onion Maggot Center for Agriculture, Food, and the Environment at UMass Amherst

Delia antiqua Identification: Onion root maggot flies are rather delicate, hump-backed gray-brown flies, about 5-7 mm long. Onion, seedcorn and cabbage maggot flies are difficult to distinguish with the naked eye, but each will only be found on and near their appropriate crop family. Life Cycle: Onion maggots spend the winter as small brown pupae in the soil. Adults emerge in spring and can travel up to one mile in search of host plants. A good indicator of the start of root maggot flight is blooming of the common roadside weed, yellow rocket.

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Vegetable: Onion Maggot Center for Agriculture, Food, and the Environment at UMass Amherst

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Vegetable: Cabbage Root Maggot Center for Agriculture, Food, and the Environment at UMass Amherst

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Vegetable: Onion Maggot Center for Agriculture, Food, and the Environment at UMass Amherst

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