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For Insects, Spiders & Their Kin
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Genus Pseneo


Taxonomic notes on the wasps of the subgenus Pseneo Malloch (Hymenoptera, Sphecidae)
By Krombein, K.V.
Proceedings of the Entomological Society of Washington, 52: 277–287, 1950

Range extension of Pseneo punctatus Fox and notes on predation of an introduced sharpshooter, Homalodisca coagulata (Say)
By Bethke, J. A., Campbell, K. A., Blua, M. J., Redak, R. A. and Yanega, D. A.
The Pan-Pacific entomologist 77(1): 54-56, 2001

Review of the wasps of the subfamily Pseninae of North America (Hymenoptera: Aculeata)
By Malloch, J.R.
Proceedings of the United States National Museum. 82 (2967):1–60, 1933
full text
The 2 plates are found between pages 16 and 17 as numbered in the paper

Revision of the Nearctic Psenini (Hymenoptera: Sphecidae) I. Redescriptions and Keys to the Genera and Subgenera
By Gittins, A.R.
Transactions of the American Entomological Society Vol. 95, No. 1, pp. 49-76, 1969
full text with free JSTOR account

Sphecid wasps of the world: a generic revision
By Richard Mitchell Bohart, Arnold S. Menke
University of California Press, 1976
This is an excellent reference work!! The entire masterly obra magnum (675+ pages!) can be accessed beginning at the link below:

      https://archive.org/details/bub_gb_FExMjuRhjpIC/page/n1

...provided courtesy of the "Internet Archive".

Thanks to Jeff for pointing to this link, which provides access to the entire work...unlike the incomplete coverage available at the Google Books link I had originally posted here.

Trap-nesting wasps and bees: life histories, nests, and associates
By Krombein K.V.
Smithsonian Press, Washington, DC. vi+570 pp., 1967

Wasps: Their Biology, Diversity, and Role as Beneficial Insects and Pollinators of Native Plants
By Heather N. Holm
Pollination Press LLC; First edition, 2021

The Sting of the Wild: The Story of the Man Who Got Stung for Science
By Justin O. Schmidt
John Hopkins University Press: Baltimore, MD, 2016
This book is useful in dispelling myths about broad groups (particularly the oft-maligned Mutillidae). The Appendix contains the rankings for 83 species and includes all ranked species. It's also worth noting that this does mean that the majority of species are unranked, so caution should be taken in creating sweeping claims (as often done on rather erroneous Internet memes).