University of California Publications
T. clavatum is a common species in eastern North America and contains two subspecies, T. clavatum clavatum Say and T. clavatum johannis (Richards).
Coville, Rollin E., "Wasps of the Genus Trypoxylon Subgenus Trypargilum in North America (Hymenoptera: Sphecidae)" (1982). Co. Paper 143.
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