n.wasp that constructs mud cells on a solid base in which females place eggs laid in paralyzed insect larvae
英汉双解大词典
mud dauber
1.
N（名词）
any of various wasps of the family Sphecidae, that construct cells of mud or clay in which they lay their eggs and store live insects as food for the developing larvae 泥蜂 → see also digger wasp