parasite pupal cases ?

parasite pupal cases ?

Observation - parasite pupal cases ?. Description: Is the cluster on the flank of this Fox Moth caterpillar made up of pupal cases of parastic fly or wasp species ? One seems to contain a larva. Didn't notice them at the time. Might explain why the caterpillar was so high up.

Is the cluster on the flank of this Fox Moth caterpillar made up of pupal cases of parastic fly or wasp species ?
One seems to contain a larva.
Didn't notice them at the time.
Might explain why the caterpillar was so high up.