purpose, this index embraces all the plant taxa 

 listed in the category labeled pollen. In some 

 entries the abbreviations aff. (related to) and 

 cf. (compare) are used to preserve the original 

 literature citations. 



Index to Predators 



This brief index lists the taxa in several 

 genera of higher wasps which store other 

 species of Hymenoptera in their nests as food 

 for their larvae. Also included are various 

 vertebrate and invertebrate predators of 

 species of Hjonenoptera. 



Acknowledgments 



Preparation of the indexes in such a brief time 

 would have been impossible without the 

 technical expertise of Smithsonian personnel 

 in computer services and applications. We are 

 most grateful to D. Bridge, Operations 

 Manager, Office of Automatic Data 

 Processing, and to J. J. Crockett, Manager, 

 and W. L. Lawson, Computer Specialist, 

 Software Systems and Services, Office of 

 Computer Services, Smithsonian Institution, 

 for their wizardry in developing programs to 

 extract the taxa, add page numbers and 

 alphabetize the entries for production of the 

 indexes. 



We are greatly indebted to P. R. Brown, 

 clerk typist for the H3Tnenoptera Project, for 

 her careful, accurate checking of computer 



printouts and entry of page numbers. 



The following hymenopterists on the staff of 

 the Smithsonian Institution (SI), Systematic 

 Entomology Laboratory (SEL) of the U.S. 

 Department of Agriculture, and University of 

 California, Riverside (UCR), checked computer 

 printouts of the indexes in the groups 

 following their names: R. W. Carlson (SEL) 

 (Ichneumonidae, Stephanidae, Evanioidea, 

 Trigonaloidea), G. Gordh (UCR) (Encyrtidae), 

 P. D. Hard, Jr. (SI) (Apoidea), K. V. Krombein 

 (SI) (Bethyloidea, Scolioidea, Vespoidea, 

 Pompiloidea, Sphecoidea), P. M. Marsh (SEL) 

 (Braconidae, Aphidiidae, Hybrizontidae), C. F. 

 W. Muesebeck (SI) (Chalcidoidea, Cynipoidea, 

 Pelecinoidea, Proctotrupoidea, Ceraphro- 

 noidea), and D. R. Smith (SEL) (Sjmiphyta, 

 Formicoidea). 



J. F. Mello, Assistant Director, National 

 Museum of Natural History (SI), has given 

 constant encouragement since his analysis of 

 the 1951 catalog and development of the 

 matrix for catalog computerization. His 

 foresight provides an opportunity for future 

 enhancement of the computer base by addition 

 of relevant information such as keys to taxa, 

 type depositories, and so forth. 



Finally, it is a pleasure to acknowledge the 

 continued and enthusiastic support of Porter 

 M. Kier, Director, National Museum of 

 Natural History (SI) and of Lloyd V. Knutson, 

 Chairman, Insect Identification and Beneficial 

 Insect Introduction Institute, U.S. Department 

 of Agriculture. 



XXX 



