2015 Volume 57 Pages 57-61
We monitored the ladybird beetle Serangium japonicum Chapin, a potential predator of the tea spiny whitefly, Aleurocanthuscamelliae Kanmiya and Kasai, by using a light trap and yellow sticky traps in the tea fields of Shizuoka Prefecture, Japan. The S. japonicum adults were captured using a light trap and yellow sticky traps. The number of beetles captured by yellow sticky traps was much lower than that captured by the light trap. The maximum numbers of beetles captured per day by the light trap were 191 in 2013 and 14 in 2014, and those by the yellow sticky traps ranged from 0.2 to 1.0 in 2013 and from 0.2 to 0.8 in 2014. The pattern of seasonal changes in the number of beetles captured by the light trap and yellow sticky traps exhibited two peaks in June and August in both the years. This result suggests that two generations of beetles occur in the tea fields in a year.
