Brassica oleracea
"Delia radicum" larvae, commonly known as cabbage maggot, has caused significant damage by feeding and burrowing within the roots of members of the Brassica family including cabbage ("Brassica oleracea"),  canola ("Brassica napus"), rutabaga ("Brassica napobrassica"), broccoli ("Brassica oleracea" var. italica), cauliflower ("Brassica oleracea" var. botrytis")", turnip ("Brassica rapa" subsp. "rapa"), and radish ("Raphanus sativus").