1. Laboratory for Sensory Ecology and the Department of Biological Sciences, Bowling Green State University, Bowling Green, Ohio 43403 USA and The University of Michigan Biological Station, 9008 Biological Rd., Pellston, Michigan USA 49769
2. Department of Biology, Loyola University Chicago, 6525 N. Sheridan Road, Chicago, Illinois 60626 USA and The University of Michigan Biological Station, 9008 Biological Rd., Pellston, Michigan USA 49769