Plenoculus davisi is a species of square-headed wasp in the family Crabronidae. It is found in North America.
Subspecies These five subspecies belong to the species Plenoculus davisi: Plenoculus davisi atlanticus Viereck, 1902 Plenoculus davisi davisi W. Fox, 1893 Plenoculus davisi gracilis F. Williams, 1960 Plenoculus davisi mojavensis F. Williams, 1960 Plenoculus davisi transversus F. Williams, 1960
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