Distribution and overwintering ecology of Tetranychus takafujii (Acari: Tetranychidae), a species found from Kinki district, Japan (In Japanese)

Abstract

Occurrence of the recently described spider mite, Tetranychus takafujii Ehara and Ohashi, on Solanum nigrum L. was confirmed in the urban areas of Osaka, Kyoto, Hyogo and Tokyo Prefectures. The mite overwintered at all stages, suggesting that it is a non-diapausing species. However, the survival rate of the mites during winter in the field was very low. These facts suggest that this species had invaded the Kinki district from tropical or subtropical zones. Nevertheless, the mites survived at least two winters in Kinki district from 2001 to 2003, and they may have established a population in the area.