A REVISION OF THE NORTH AMERICAN SPECIES OF PTEROCHEILUS AND NOTES ON RELATED GENERA (Hymenoptera, Vespidae)

Author: BOHART RICHARD M.  

Publisher: Entomological Society of America

ISSN: 1938-2901

Source: Annals of the Entomological Society of America, Vol.33, Iss.1, 1940-03, pp. : 162-208

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