Abstract
The genus Odontopsen Tsuneki was erected by Tsuneki (1964) as a subgenus of the genus Psen Latreille, 1796. Bohart and Menke (1976) raised it to an independent genus. The type species, O. hanedai (Tsuneki, 1964) was found in the Konsei-Pass Nikko, at about 2100 m altitude, in the mountains of central Honshu Island, Japan. No other species of this genus was found in the following almost half a century.
References
Bohart, R.M. & Menke, A.S. (1976) Sphecid Wasps of the World: A Generic Revision. University of California Press, Berkeley, Los Angeles, London, 695pp.
Tsuneki, K. (1964) An interesting new species of the genus Psen captured in Japan with the erection of a new subgenus (Hym.: Sphec.: Pemphredoninae). Insecta Matsumurana, 27, 12–15.