One is likely to get hundreds of these chalcid flies from a single caterpillar.
These are much larger than the chalcid flies and are called Ichneumon flies.
The ears are distinct, whereas in the chalcid they are hidden under the skin.
In some cases the pupa was being devoured by the minute larv of a chalcid fly, and in one cell only the dried skin remained.
Parapsidal grooves: the grooves or furrows on each side of the chalcid scutellum, defining the parapsidae.