Species Vespula pensylvanica - Western Yellowjacket
Yellowjackets of America North of MexicoBy Akre, R.D., A. Greene, J.F. MacDonald, P.J. Landolt, and H.G. Davis
U.S. Department of Agriculture, 1980
Agriculture Handbook No. 552, 102 pp.
Might be available by contacting:
Superintendent of Documents
US Government Printing Office
Washington, DC 20402
The Vespinae of North America (Vespidae, Hymenoptera)By L.S. Kimsey and J.M. Carpenter
Journal of Hymenoptera Research Vol. 28: 37–65, 2012
L.S. Kimsey and J.M. Carpenter, The Vespinae of North America (Vespidae, Hymenoptera), Journal of Hymenoptera Research 28
: 37-65, 2012.
The Yellowjackets of America North of Mexico REVISED EDITIONBy Roger Akre, Albert Greene, John Macdonald, Peter J Landolt, Harry G Davis,and Elizebeth Myhre
None Unfinished Ms, 1996
This book was meant to be published around 96/97 but was rejected by the publisher at the last minute. Very few manuscripts were made but this lost work fell into obscurity. Recently a scan has been made to salvage this lost work. In comparison to the original book there is much added and the finished product would have turned out great. A readable/downloadable copy of this manuscript can be found here: https://www.academia.edu/5658541/Akre_et_al_1996_The_yellowjackets_of_America_north_of_Mexico_REVISED_EDITION
A tentative synopsis of the Hornets and Yellowjackets of AmericaBy Joseph Bequaert
Entomologica Americana, 1932
This is the first major revision of North American Vespinae and Vespinae systematics in general. This review provides keys to the North American species as well as provides extensive distributional data and biological notes. Additions and corrections to this publication contaning distributional, biological, and nomenclatiorial information was added in two subsequent publications (1935 and 1941). Links are provided to those below.
Additionally provided below is Bequaert's divisions of the Vespinae which is a prequel to this review and deals with all known species of the Vespinae worldwide that were known at the time.