Athalia proxima (Klug)
(=Athalia lugens proxima (Klug))
Taxonomic position
Insecta: Hymenoptera: Symphyta: Tenthredinidae
Common name
Mustard sawfly
Habitat / Crop(s) damaged
Cole crops (mustard, cabbage, cauliflower, radish, etc.) and other host plants in family Brassicaceae.

Symptoms of damage include leaves defoliated from the margins and presence of dark brown or black caterpillars with black head, swollen thorax, yellow spotted body and more than seven pairs of legs aggregating on the cut edges of leaves.
Pest status
Minor, sporadically serious.
Images
larva larva larva pupa Mustard sawfly adult Mustard sawfly in lateral view adult Photo credit : Dr. Prakash Kumar, Deputy Director, Agronomy (Research), Agriculture Office, Collectorate campus, Sirohi (Rajasthan)