“…In Japan, O. strigicollis (Poppius), O. sauteri (Poppius), O. minutus (Linnaeus), O. nagaii Yasunaga, and O. tantillus (Motschulsky) are common (Yasunaga, 1997a, b, c). Among these species, O. sauteri is known as an important indigenous natural enemy of Thrips palmi Karny on eggplants, Solanum sativa L. (Nagai et al, 1988;Nagai, 1990;Kawai, 1995), and has mostly been investigated for the biological control of Frankliniella occidentalis (Pergande) and T. palmi (Kohno and Kashio, 1998;Nagai and Yano, 1999). Although O. minutus is also a dominant species on eggplants (Ohno and Takemoto, 1997), some field data suggest that this insect may prefer trees as its host (T. Noda, unpublished data).…”