Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Global guide of the flat wasps (Hymenoptera, Bethylidae)
By Azevedo C. O., I. D. C. C. Alencar, M. S. Ramos, D. N. Barbosa, W. D. Colombo, J. M. R. Vargas, and J. Lim.
Magnolia Press, Zootaxa, 2018
ISBN: 9781776704828
Cite: 1866518 with citation markup [cite:1866518]
Azevedo, C. O., I. D. C. C. Alencar, M. S. Ramos, D. N. Barbosa, W. D. Colombo, J. M. R. Vargas, and J. Lim. (2018). Global guide of the flat wasps (Hymenoptera, Bethylidae). Zootaxa 4489 (1): 001-294. https://doi.org/10.11646/zootaxa.4489.1.1

The only world revision of Bethylidae since Kieffer (1914). Diagnoses, taxonomic evaluation, keys, and a checklist of all extant genera and subfamilies are provided. Examining over 400,000 specimens from museums around the world, this work has contributed 153 new or revalidated combinations, 16 new genus-group synonyms, 11 species with revalidated status, and 1 synonym. The genus-group synonym Pristepyris Kieffer was revalidated as a senior synonym of Acrepyris.

https://www.biotaxa.org/Zootaxa/article/view/zootaxa.4489.1.1

quite useful
and well illustrated but it may be worth noting that there are some typos and swapped figure legends that can be confusing until you realize what's going on