Onion Maggot or Onion Fly

Catalogue Type
Plant Pests Catalogue
Scientific Name
Delia antiqua
Family
Anthomyiidae
Distinguishing Characters
Eggs are elongate in shape and white in colour.
Maggots are also white in colour and 18 mm in length when full grown.
Flies are slender, greyish, large-winged. The maggots are small, white
Host Crop
Onion and Garlic
Order
Diptera
Photo of Insect
Photo of Damaged Crop
Description

The maggots bore into the bulbs, causing the plants to become flabby and yellowish.

It causes withering in the field and rotting in storage. 

Damage leads to the invasion of Bacillus carolovorus which causes soft rot of onion.