This sawfly appears to have an orange parasite attached to the left side of it's head.

Sawfly is the common name for insects belonging to suborder Symphyta of the order Hymenoptera.
Sawflies are distinguishable from most other Hymenoptera by the broad connection between the abdomen and the thorax and by their caterpillar-like larvae.
The common name comes from the saw-like appearance of the ovipositor,
which the females use to cut into the plants where they lay their eggs.
Large populations of certain sawfly species can cause substantial economic damage
to forests and cultivated plants.

Going Green in August is to be found HERE