Given that these wasps require a source of wet mud to construct their tubular nest chambers, their range in the Sonoran Desert is restricted to riparian and urban habitats. The chambers are affixed especially to building below eaves where rain will not damage them. Inside the tubes are collections of paralyzed spiders and the larva-grub of the mother wasp. She hunts spiders on vegetation and also visits flowers for pollen and nectar. This wasp is found throughout much of North America.