P E R L A Newsletter and Bibliography o f the International Society of Plecopterologists PERLA No. 20,2002 Aquatic Entomology Laboratory Department of Biological Sciences University of North Texas Denton, Texas 76203 PERLA Annual Newsletter and Bibliography of the International Society of Plecopterologists Available on Request to the Managing Editor MANAGING EDITOR: Kenneth W. Stewart Department of Biological Sciences University o f North Texas P O Box 305220 Denton, Texas 76203-5220 USA Fax: 940-565-3821 E-mail:
[email protected] EDITORIAL BOARD: Richard W. Baumann Department of Zoology and Monte L. Bean Life Science Museum Brigham Young University Provo, Utah 84602, USA Peter P. Harper Département de Sciences biologiques Université de Montréal C.P. 6128, Suce. "Centre-Ville" Montréal, Québec, H3C 3J7, CANADA Boris C. Kondratieff Department of Bioagricultural Sciences and Pest Management Colorado State University Ft. Collins, CO 80523, USA Ian D. McLellan P. O. Box 95 Westport, NEW ZEALAND Shigekazu Uchida Department of Civil Engineering Aichi Institute of Technology 1247 Yakusa Toyota 470-0392, JAPAN Peter Zwick Limnologische FluBstation Max-Planck-Institut fur Limnologie Postfach 260 D-36105 Schlitz, GERMANY EDITORIAL ASSISTANT AND COPY EDITOR: Francene Stewart, Denton, Texas DEDICATION This issue is dedicated to the memory of Bill Ricker, eminent fisheries scientist and Plecopterologist, who died on September 8,2001 at “Berwick-on-the-Lake” in Nanaimo, British Columbia. We celebrate his long and productive life, and here particularly his many contributions to knowledge of Plecoptera. See following section on Bill Ricker. COVER ILLUSTRATION Rakuraperla nudipes male. An original drawing done by Ian McLellan in 1976 for his 1977 New Alpine and Southern Plecoptera from New Zealand.