We sincerely thank Xian-Ying Meng and Mizuho Muramatsu at the
National Institute of Advanced Industrial Science and Technology (AIST)
for help with the transmission electron microscopy and determination of
DNA base content, respectively. We also thank Jean P. Euze´by at E ´ cole
Nationale Ve´te´rinaire de Toulouse for his helpful advice on the
nomenclature of the novel species. This research was supported by grants
from the Japan Society for the Promotion of Science (20780052).