A Systematic Review of the Ectemnius (Hymenoptera: Sphecidae) of Hawaii by Raina L. Takumi (Author) April 1999 Paperback $26.95, £21.00
Systematics and Biology of the Genus Macrocneme Hübner (Lepidoptera: Ctenuchidae) by Robert E., IV Dietz (Author) July 1994 Paperback $31.95, £25.00
Systematics of the Chrysoxena Group of Genera (Lepidoptera: Tortricidae: Euliini) by John W. Brown (Author), Jerry A. Powell (Author) December 1991 Paperback $31.95, £25.00
A Taxonomic Revision of Nearctic Endasys Foerster 1868 (Hymenoptera: Ichneumonidae, Gelinae) by John C. Luhman (Author) November 1990 Paperback $36.95, £29.00
California Insects by Jerry A. Powell (Author), Charles L. Hogue (Author) September 1980 Paperback $28.95, £23.00