ARCHIVES IN&T BIOCHEMISTRY AND PHYSIOLOGY Richard T. Mayer, Executive Editor Jeffrey P. Shapiro, Associate Editor Ann Harris, Assistant Editor USDA, ARS US t-iorticultural Research Lab 0 2120 Camden Road Orlando, FL 32803 EDITORIAL BOARD R.A. Bell USDA, ARS Insect Reproduction Lab Beltsville Agricultural Research Center Beltsville, Maryland C.J. Blomquist Department of Biochemistry University of Nevada at Reno Reno, Nevada D. Borovsky Florida Medical Entomology Laboratory University of Florida, IFAS Vero Beach, Florida W.S.Bowers Department of Entomology College of Agriculture The University of Arizona Tucson, Arizona L. Brattsten Agricultural Products Department E.1. DuPont deNemours & co. Wilmington, Delaware J.R. DeLoach USDA, ARS, SPA Veterinary Toxicology College Station, Texas R.G.H. Downer Department of Biology University of Waterloo Waterloo, Ontario, Canada J.L. Eaton Department of Entomology Virginia Polytechnic lnstitute and State University Blacksburg, Virginia R. Feyereisen Department of Entomology Oregon State University Corvallis, Oregon S. Friedman Entomology Department University of Illinois Urbana, Illinois L.I. Gilbert Department of Biology University of North Carolina at Chapel Hill Chapel Hill, North Carolina H.H. Hagedorn Department of Entomology Cornell University Ithaca, New York H. Laufer Department of Genetics and Cell Biology The University of Connecticut Storrs, Connecticut J.J. Menn U.S. Dept of Agriculture National Program Staff Beltsville, Maryland T. Nagai Agriculture Canada Re5earch Institute London, Ontario, Canada H. Oberlander J.G. Hildebrand USDA, ARS University of Arizona Insect Attractants, Behavior Arizona Research Laboratories and Basic Biology Research Division of Neurobiology Laboratory Tucson, Arizona Gainesville, Florida H.R. Kim I. Orchard Department of Biology Department of Zoology Korea University University of Toronto Seoul, Korea Ramsay Wright Zoological J. Koolman Laboratories Physiologisch-Chemisches Toronto, Ontario, Canada lnstitut der Universitat Marburg T. Piek Marburg, Federal Republic of Universiteit van Amsterdam Germany Farmacologisch A.K. Kumaran Labora torium Department of Biology Amsterdam, The Marquette University Netherlands Milwaukee, Wisconsin R. Lafont Ecole Normale Superieure d u Laboratoire de Zoologie Paris, France Authorization to photocopy items forinternal or personal use, or the internal or personal use of specific clients is granted by Alan R. Liss, Inc. for libraries and other users registered with the Copyright Clearancecenter (CCC)Transactional Reporting Service,provided that the base fee of $00 50 per copy, plus $00.25 per page IS paid directly to CCC, 27 Congress Street, Salem, MA 01970 0739-4462189$00.50 + $00 25. Archives of Insect Biochemistry and Physiology (ISSN 0739-4462) is published monthly by Alan R. Liss. Inc., 41 East 11th Street, New York. N Y 10003. Subscription J.H. Postlethwait Department of Biology University of Oregon Eugene, Oregon price Volumes 10-12, 1989. 12 issues $345 in US $393 outside US Special Personal Rate $85 in US. $133 outside U S The personal rate MUST be paid by personalcheck, credit card, bank draft or money order All subscriptions outside North America will be sent by air Payment must be made in US dollars drawn on a US bank Change of Address: Please sent to publisher six weeks prior to move,enclose present mailing label with change of address Claims for Missing Issues: Claims cannot be honored beyond four months after mailing date duplicate copies cannot be sent to replace issues not delivered because of failure to notify publisher of change of address Cancellations:Subscriptioncancellations will H.H. Rees Department of Biochemistry University o f Liverpool Liverpool, United Kingdom L.M. Riddiford Department of Zoology University of Washington Seattle, Washington D.A. Schooley Department of Biochemistry University of Nevada, Reno Reno, Nevada C.E. Sekeris Biological Research Center The National Hellenic Research Foundation Athens, Greece J.A. Svoboda USDA, ARS insect and ~~~~~~d~ H~~~~~~Lab Beltsville, Maryland Y. Tamaki Insect Biochemistry Laboratory Division of Entomology National lnstitute of AgroEnvironmental Sciences Ibaraki, Japan J.L. Vaughn USDA, ARS, BARC Insect Pathology Laboratory Beltsville, Maryland S.B. Vinson Department of Entomology Texas A&M University College Station, Texas D. Yamamoto Mitsubishi-Kasei Institute of Life Sciences Tokyo, Japan not be accepted after the first issue has been mailed. Exclusive agent in Japan: lgaku Shoin Limited, Foreign Deparrment, 1-28-36Hongo, Bunkyo-ku,Tokyo 113, Japan. Volumes 1012, Y 95,400(aircargo service only). Indexed by: BlOSlS Data Base, Current ContentsiLife Sciences,and CurrentContents/ Agriculture Biology and Environmental Science-Science Citation Index (SCISEARCH), Cambridge Scientific Abstracts, Chemical Abstracts, ISI-Soviet Union, Index Medicus. Printed in the United States of America. The paper on which this journal is printed adheres to the requirementsfor libralyiarchival stability. Copyright C 1989 Alan R. Liss, Inc.