1. Department of Invertebrate Zoology; American Museum of Natural History; Central Park West at 79th Street New York New York 10024 USA
2. Faculty of Life and Environmental Sciences; University of Tsukuba; Tsukuba Ibaraki 305-8572 Japan
3. Department of Urban Environmental Engineering; Kyungnam University; Changwon 631-701 Korea
4. Department of Biology; Dalhousie University; Halifax Nova Scotia B3H 4R2 Canada
5. Canadian Institute for Advanced Research; Program in Integrated Microbial Diversity