Review of the wasps of the subfamily Pseninae of North America (Hymenoptera: Aculeata)
Series: Proceedings of the United States National Museum -- Vol. 82, art. 26; no. 2967
Published: 1934
Place of publication: Washington
Language: eng
Number of pages: 60
Subjects: Sphecidae; Hymenoptera
Notes: Cover serves as title-page.