Snodgrass, R. E. 1941. The male genitalia of Hymenoptera. Smithsonian Miscellaneous Collections 99 (14): 1-86 + 33 plates.
catalog of information about evanioid wasps
Snodgrass, R. E. 1941. The male genitalia of Hymenoptera. Smithsonian Miscellaneous Collections 99 (14): 1-86 + 33 plates.