15 sp., see text Pseudomasaris is a genus of pollen wasps of the family Vespidae, found in arid regions of western North America.

[1] They feed their larvae on the pollen and nectar of a variety of plants, though many species prefer flowers in the genus Phacelia.

[2] They are colored black with yellow or white markings that, in a few species, resemble the coloration of yellowjackets.

[3] Pseudomasaris contains 15 species:[4]