Hymenoptera: Vespidae
Abispa ephippium
A Cuckoo Wasp (stilbum cyanurum) observes the Potter Wasp building its mud nest.
The Cuckoo Wasp will return when the Potter Wasp is absent and will insert its own egg into the nest to take advantage of the food supply (a stung insect) sealed into the tube by the Potter Wasp for its own larva.