Annals of the Entomological Society of America
This contribution to our knowledge of the sub-family Scoliinae (digger wasps) found in North America, Central America and the West Indies, is the result of work done at the Massachusetts Agricultural College under the direct supervision of Doctor H. T. Fernald, and forms a portion of a thesis for the degree of doctor of philosophy. In it, an attempt has been made to place before those interested, a paper in which our present knowledge of these wasps is systematically arranged and the identification of the species facilitated.
Bartlett, Oscar C., "The North American Digger Wasps of the Subfamily Scoliinae" (1912). Ba. Paper 81.