An annotated catalog of the halictid bees of the Western Hemisphere (Hymenoptera, Halictidae)Jesus S. Moure, Paul David Hurd · First published 1987Open the Tome
Principal sunflower bees of North America with emphasis on the Southwestern United States (Hymenoptera, Apoidea)Paul David Hurd · First published 1980Open the Tome
An annotated catalog of the carpenter bees (genus Xylocopa Latreille) of the Western Hemisphere (Hymenoptera, Anthophoridae)Paul David Hurd · First published 1978Open the Tome
The bee family Oxaeidae with a revision of the North American species (Hymenoptera, Apoidea)Paul David Hurd · First published 1976Open the Tome
The principal Larrea bees of the southwestern United States (Hymenoptera, Apoidea)Paul David Hurd · First published 1975Open the Tome
Ecology of the squash and gourd bee, Peponapis pruinosa, on cultivated cucurbits in California (HymenopteraPaul David Hurd, E. Gorton Linsley, A. E. Michelbacher · First published 1974Open the Tome
Parasitic bees of the genus Holcopasites Ashmead (Hymenoptera: Apoidea)Paul David Hurd · First published 1972Open the Tome
A classification of the squash and gourd bees Peponapis and Xenoglossa (Hymenoptera: Apoidea)Paul David Hurd · First published 1970Open the Tome
A classification of the large carpenter bees (Xylocopini, Hymenoptera: Apoidea)Paul David Hurd · First published 1963Open the Tome
American bees of the genus Diozys Lepeletier and ServillePaul David Hurd · First published 1958Open the Tome
The carpenter bees of California (Hymenoptera: Apoidea)Paul David Hurd · First published 1955Open the Tome
The megachiline bees of California (Hymenoptera : Megachilidae)Paul David Hurd · First published 1955Open the Tome
Revision of the Nearctic species of the pompilid genus Pepsis (Hymenoptera, Pompilidae)Paul David Hurd · First published 1952Open the Tome
The Scoliidae of California (Hymenoptera: Aculeata)Paul David Hurd · First published 1952Open the Tome
The California velvet ants of the genus Dasymutilla Ashmead (Hymenoptera: Mutillidae)Paul David Hurd · First published 1951Open the Tome
The melectine bees of California (Hymenoptera: Anthrophoridae)Paul David Hurd · First published 1951Open the Tome
Systematics of the California species of the genus Pepsis Fabricius (Hymenoptera: Pompilidae)Paul David Hurd · First published 1948Open the Tome
