Bela Keshan, bkeshan2001@yahoo.co.in, City College, Zoology, Kolkata, India, Kiyoshi Hiruma, hiruma@cc.hirosaki-u.ac.jp, Hirasaki University, Agriculture, Faculty of Agriculture and life sciences, Hirosaki, Japan, and Lynn Riddiford, lmr@u.washington.edu, University of Washington, Department of Biology, Kincaid Hall, Box 351800, Seattle, WA.