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Apoid Wasps (Apoidea)- traditional Sphecidae

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A key to the genus Tachytes in America north of Mexico with descriptions of three new species (Hymenoptera, Sphecidae, Larrinae)
By Richard Bohart
Proceedings of the Entomological Society of Washington, 96:342-349, 1994

Revision of North American Liris Fabricius (Hymenoptera: Sphecoidea: Larridae)
By Karl V. Krombein, Sandra Shanks Gingras
Smithsonian Institution Press, Smithsonian Contributions To Zoology, No. 104 (96 pp.), 1984

Improved key to New World species of Sphecius (Hymenoptera: Crabronidae)
By Holliday C.W., Coelho J.R.
Ann. Ent. Soc. Am. 99: 793-798, 2006

Reuse of old Trypoxylon politum nest by Chalybion californicum (Hymenoptera : Sphecidae) in New York, USA
By F.E.Kurczewski
Entomological News 114(5):241-245, 2003

Nocturnal clustering of the solitary wasp, Chalybion californicum (Saussure) (Hymenoptera: Sphecidae)
By T.R.Prentice, G.P.Walker
The Pan-Pacific Entomologist, 1991
Full text (PDF)

Observations on the prey and nests of seven species of Cerceris (Hymenoptera: Sphecidae)
By Evans H.E., Rubink W.L.
The Great Basin Naturalist 38: 59-63, 1978

A revision of the genus Eucerceris Cresson (Hymenoptera: Sphecidae)
By Scullen H.A.
Bull. U.S. Nat. Mus. 268: 1-97, 1968

California wasps of the genus Oxybelus (Hymenoptera: Sphecidae, Crabroninae)
By Bohart R.M. and Schlinger E.I.
Bulletin of the California Insect Survey 4(4): 103-142, 1957
Full text here.

Synopsis of the California species with a key to North American species.

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