mud dauber

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. Midland & Western U.S. Any of various wasps that build nests of mud with cellular compartments for eggs and paralyzed prey. Also called regionally dirt dauber, mud wasp.

GNU Webster's 1913

1. n. (Zoöl.) a mud wasp; the mud-dauber.

WordNet 3.0

1. n. wasp that constructs mud cells on a solid base in which females place eggs laid in paralyzed insect larvae