Mud dauber wasp building a nest

This mud dauber wasp was seen immobilizing and attempting to drag off a very large caterpillar in the Mojave Desert. Mud daubers are not a single species, but a collection of species from two families. They build their nests from mud, and stock those nests with prey for their young when they hatch. This wasp could be the species Chalybion californicum. | Transition Habitat Conservancy

Dirt Dauber insect builds a mud house