The head, body and front portion of the forewings are yellow-orange while the hindwing and back portion of the forewings are grey and silver.

The back edge of the hindwing has black spots.

[2] The larvae are parasitoids, feeding on the larvae of paper wasps, including species such as Polistes dominulus, P. exclamans, P. metricus, Mischocyttarus flavitarsis[3] and P.

[4] For example, M. flavitarsis nest cells are often invaded by the larvae at night because the wasps cannot see them.

They will then pupate, spinning their cocoons in empty cells.