Suitable Food of W. rotunda grown in greenhouses. However, the use of O. strigicollis as a control agent against thrips is difficult because the reproduction of this predator is reduced under the low temperature and short-day conditions in winter, even when released in heated greenhouses 19. Therefore, nondiapausing natural enemies from tropical or subtropical regions should be used to extend the biological control of T. palmi to greenhouses in Japan during winter. The possibility of such use had already been suggested 4,11,14 when the use of O. strigicollis as a biological control agent against T. palmi in Japanese greenhouses was initiated. In different parts of Thailand (Chiang Mai, Suphan Buri, Nakhon Pathom, and Bangkok), Wollastoniella rotunda Yasunaga et Miyamoto (initially recorded as Bilia JARQ 47 (2), 185-190 (2013) http://www.jircas.affrc.go.jp