Dock sawfly
Insect
Dock sawfly
Ametastegia glabrata (Fallén)
Hymenoptera: Tenthredinidae
Distribution: Mainly southern Canada and northern US south to PA and IL.
Photos
Larva digs brownish, circular holes on the fruit surface and creates short tunnels in the flesh.
NY State Ag Experiment Station
C
The adult is bluish black with red legs (A). The larva (B) is a smooth velvety green worm with white legs (3 pairs of true legs and 7 pairs of prolegs) and a dark head.