Dreisbach 1950. New species in the genus Anoplius, Pycnopompilus, and Stretosella, n. gen. (Hymenoptera; Psammocharidae) with keys and microphotographs of the genitalia of the males of these genera and Agenioideus for North America and the Antilles. American Midland Naturalist, 43 1950: pp. 570-599