Definition of onion fly in English:

onion fly

Line breaks: onion fly

noun

A small fly whose larvae are a pest of onions.
  • The European Delia antiqua (family Anthomyiidae), and the American Tritoxa flexa (family Otitidae), which also attacks garlic
More example sentences
  • Similarly, the leek moth Acrolepiopsis assectella Zeller and the onion fly Delia antiqua Meigen are both attracted to their respective host plants by the flavour volatiles.
  • It is the offspring of the onion fly, which sometimes flits about among the young onions at this season.

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Word of the day retroflex
Pronunciation: ˈretrəˌfleks
adjective
turned backward