ARCHIVES OF INSECT BIOCHEMISTRY AND PHYSIOLOGY Richard T. Mayer, Executive Editor JeffreyP. Shapiro, Associate Editor Ann Harris, Assistant Editor USDA, ARS US Horticultural Research Lab 2120 Camden Road Orlando, FL 32803 R.A. Bell USDA, ARS Insect Reproduction Lab Beltsville Agricultural Research Center Beltsville, Maryland R. Feyereisen Department of Entomology Oregon State University Corvallis, Oregon S. Friedman Entomology Department University of Illinois Urbana, Illinois H. Laufer Department of Genetics and Cell Biology The University of Connecticut Connecticut H.H. Rees Department of Biochemistry University of Liverpool Liverpool, United Kingdom L.M. Riddiford Department of Zoology University of Washington G.J. Blomquist J.J.Menn Seattle, Washington Department of Biochemistry U.S. Dept of Agriculture D.A. Schooley University of Nevada at Reno L.I. Gilbert National Program Staff Director, Biochemical Reno, Nevada Department Research University ofOfNorth Carolina Beltsville, Maryland D. Borovsky Zoecon Research Institute at Chapel Hill Florida Medical Entomology Palo Alto, California Chapel Hill, North Carolina T. Nagai Laboratory Agriculture Canada Research C.E. Sekeris University of Florida, IFAS H.H. Hagedorn Institute BiologicalResearch Center Vero Beach, Florida Of EntomologY London, Ontario, Canada The National Hellenic Cornell University Research Foundation W.S. Bowers Ithaca, New York H. Oberlander Athens, Greece Department of Entomology J.G. Hildebrand USDA, ARS J. A. Svoboda College of Agriculture University of Arizona Insect Attractants, Behavior USDA, ARS The University of Arizona Arizona Research Laboratories and Basic Biology Research Insect and Nematode Tucson, Arizona Division of Neurobiology Laboratory Hormone Lab L. Brattsten Tucson, Arizona Gainesville, Florida Beltsville, Maryland Agricultural Products Y. Tamaki H.R. Kim Department Insect Biochemistry Department of Biology I. Orchard E.I. DuPont deNemours & Korea University Department of Zoology Laboratory co. Division of Entomology Seoul, Korea University of Toronto Wilmington, Delaware National Institute of AgroRamsay Wright Zoological J. Koolman Laboratories Environmental Sciences J.R. DeLoach Ph~siolo~isch~ChemischesToronto, Ontario, Canada Ibaraki, Japan USDA, ARS, SPA Institut der Universitat Veterinary Toxicology J.L. Vaughn Marburg College Station, Texas USDA, ARS, BARC Marburg, Federal Republic of T. Universiteit van Amsterdam Insect Pathology Laboratory Germany R.G.H. Downer Farmacologisch Beltsville, Maryland Department of Biology A.K. Kumaran Laboratorium S.B. Vinson University of Waterloo Department of Biology Amsterdam, The Department of Entomology Waterloo, Ontario, Canada Marquette University Netherlands Texas A&M University Milwaukee, Wisconsin College Station, Texas J.L. Eaton Department of Entomology R. Lafont J.H. Postlethwait D . Yamamoto Virginia Polytechnic Institute Ecole Normale Superieure Department of Biology Mitsubishi-Kasei Institute of and State University du Laboratoire de Zoologie University of Oregon Life Sciences Blacksburg, Virginia Paris, France Eugene, Tokyo, -Japan - Oregon - - Authorization to photocopy items for internal or personal use, or the internal or personal use of specificclients is granted by Alan R. Liss, Inc. for libraries and other users registered with the Copyright Clearance Center (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. 07394462/88 $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 price: Volumes 7-9, 1988,12 issues:$320 in US; $359 outside US. Special Personal Rate: $85 in US; $124outside US. Subscriptionsat the personal rate MUST be paid by personal check, 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 send to publisher six weeks prior to move; enclose present mailing label with change of address. Claimsfor 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: Subscription cancellations will not be accepted after the first issue has been mailed. Exclusive agent in Japan: lgaku Shoin Limited, Foreign Department, 1-28-36 Hongo, Bunkyo-ku, Tokyo 113,Japan. Volumes 7-9, V 93,200 (air cargo service only). Indexed by: BlOSlS Data Base, Current ContentdLife Sciences,Science Citation Index and Current Contents/AgricultureBiology and Environmental Sciences,Cambridge Scientific Abstracts,Chemical Abstracts, ISISoviet Union, Index Medicus. Printed in the United States of America. Copyright 0 1988Alan R. Liss, Inc.