The organ pipe mud dauber (Trypoxylon politum) is a predatory wasp in the family Crabronidae.

Females and males are similar in colour, a shiny black, with the end part of the back leg being pale yellow to white.

Nest site choice usually depends on three specifications - a smooth, vertical surface with ample shade and rainfall protection, a source of mud nearby, and an adjacent forest.

[3] The females form long mud tubes consisting of multiple cells, which they fortify with paralyzed spiders.

North of central Virginia, the wasps have a univoltine life-history pattern, and only produce one generation per year.

[6] Mud daubers of this species are unique, compared to many other wasps, in that males stay at the mouth of the nest to protect the offspring.