Hiroki Kohno,¹ Shota Suenami,¹ Hideaki Takeuchi,¹ Tetsuhiko Sasaki,^2,* Takeo Kubo<sup>1

1</sup>1Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku,
²2Honeybee Science Research Center, Research Institute, Tamagawa University,Machida, Tokyo 194-8610,

^*Corresponding author. Tel.: +81-42-739-8453; Fax: +81-42-739-8453; E-mail: tsasaki@lab.tamagawa.ac.jp