1. Biosystematics Laboratory, Faculty of Social and Cultural Studies, Kyushu University, Fukuoka, Japan
2. Faculty of Agriculture, Kyushu University, Fukuoka, Japan
3. Faculty of Agriculture, Tokyo University of Agriculture and Technology, Tokyo, Japan
4. Central Institute of Radioisotope Science and Safety Management, Kyushu University, Fukuoka, Japan
5. Department of Life Sciences, National Taiwan Normal University, Taipei, Taiwan
6. Silkworm resource division, Institute of Genetic Resources, Kyushu University Graduate School of Bio Resources and Bioenvironmental Science, Fukuoka, Japan