ARCHIVES IN&T BIOCHEMISTRY AND PHYSIOLOGY A. Kr ish n a Kurnaran, Executive E di t or Published in collaboration Entomological Society of America Barbara DeNover. Editorial Assistant Dep artme n t of Biology 0 Marquet t e University 530 North 15th Street 0 Milwaukee, WI 53233 Gerald Bergtrom, Associate Editor EDITORIAL B O A R D 2 G.J.Blomquist Department of Biochemistry University of Nevada at Reno Reno, Nevada . 1. Ishaaya Institute of Plant Protection The Volcani Center Bet Dagan, Israel D. Borovsky Florida Medical Entomology Laboratory University of Florida, IFAS Vero Beach, Florida D. Jones Graduate Center for Toxicology University of Kentucky Lexington, Kentucky W.S. Bowers Department of Entomology College of Agriculture University of Arizona Tucson, Arizona H.R. Kim Department of Biology Korea University Seoul. Korea L. Brattsten Rutgers State University Cook College New Jersey Agricultural Experiment Station Departmentef Entomology and Zoology New Brunswick, New Jersey G.M.Chippendale Department of Entomology University of Missouri Columbia, Missouri R.G.H. Downer Department of Biology University of Waterloo Waterloo. Ontario, Canada L.I. Gilbert Department of Biology University of North Carolina at Chapel Hill Chapel Hill, North Carolina H.H. Hagedom Department of Entomology University of Arizona Tucson, Arizona J , Koolman Ph ysiologisch-Chemisches Institut der Universitat Marburg Marburg, Germany R. Lafont Ecole Normale Superieure du Laboratoire de Zoologie Paris. France H. Laufer Department of Molecular and Cell Biology The University of Connecticut Storrs. Connecticut R.T. Mayer USDA, ARS U.S. Horticultural Research Lab Orlando, Florida J.J. Menn USDA, ARS, BA Plant Sciences Institute Beltsville, Maryland Q 1993 Wiley-Liss. Inc All rights resewed No part 01 this puMicalion may be reproduced in any form OT by any means, except as permmed under section 107 or 108 01 the 1976 United States Copyright Act, w~thouteither the prior written permission of the publisher. or authorization through the Copyright Clearance Center. 27 Congress Street. Salem, MA 01970, (508) 7443350. tax (508)745-9379 Requests to the publisher tor permission should be addressed to the Permissions Depanment. John Wiley 8 Sons Inc Archlves of In.sct Biochemistry and Physiology (ISSN 0739.44621 is published monmly by Wiley-Liss. Inc a aivision 01 John WJey & Sons Inc.. 605 Third Avenue, New York NY 10158-0012 s.nd subscrlp Uon Inqulrfwto: John Wiley 8 Sons Irc Sdbscnption Depanmert %n floor 605 Third Avenue Nevv Yam. L.K. Miller Department of Entomology and Genetics University of Georgia Athens, Georgia M.G. Peter Institut fur Organische Chemie und Biochemie der Universitat Bonn Bonn, Germany D.M. Soderlund Department of Entomology New York State Agricultural Experiment Station Geneva, New York J.A. Svoboda USDA, ARS, BA Insect Neurobiology and Hormone Laboratory Beltsville, Maryland H.H. Rees Department of Biochemistry University of Liverpool Liverpool, United Kingdom W.H. Telfer Department of Biology University of Pennsylvania Philadelphia, Pennsylvania L.M. Riddiford Department of Zoology University of Washington Seattle, Washington J.L. Vaughn USDA, ARS. BA Insect Pathology Laboratory Beltsville, Maryland D.A. Schooley Department of Biochemistry University of Nevada, Reno Reno, Nevada S.B. Vinson Department of Entomology Texas A&M University College Station, Texas C.E.Sekeris Biological Research Center The National Hellenic Research Foundation Athens, Greece S. Yagi Tropical Agriculture Research Center Research Division 1 Tsukuba, Ohwashi, Japan J.P. Shapiro USDA, ARS U.S. Horticultural Research L.ab Orlando. Florida D. Yamamoto Mitsubishi-Kasei Institute of Life Sciences Tokyo, japan P.D.Shirk X. Zhong USDA, ARS, SAA, Insect Attractants Behavior and Basic Biology Research Laboratory Gainesville, Florida Department of Insect Physiology Institute of Zoology Academia Sinica Beijing, China NY 10158-0012. (212) 850-6543 Volumes 22-24. 1993, 12 issues $573 in the U S , $693 in Canada and Mexico. $738 outside North America Speclal Personal Rate (Volumes 22-24) $1 15 inside the U S , $175 outside the U S Attention: Members of me Entomological Society 01 America may subscribe to this journal at a reduced rate Please contact the society for details The personal rate MUST be paid by personal check, credit card bank draft or money order All subscriptions outside North Amenca will be sent by air Payment must be made in U S dollars drawn on a U S bank Change 01 Address: Please send to publisher six weeks prior lo move enclose present mailing label with change of address Claims lor Mlrrlng Issues. 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Indexed by: BlOSlS Data Base, Current Contents1 LifeSciences, Currenl ContentslAgriculture.Biology and Environmental Sciences. Science Citation Index, Scisearch. Cambridge Scientilic Abstracts. Index Medicus, Chemical Abstracls, Reference Update, Excerpla Medica. Institute of Scientific Information-SovietUnion. Printed in the United States 01 America Copyrlght b 1993 WIky-Lks, Inc. This journal is printed on acid-free paper.