Abstract

In order to effectively control the Ricania shanthungensis, we investigated the light response to adults and developed an adult catching device using light with superior attractiveness. The preference among six light sources such as daylight color, green, etc. for the Ricania shanthungensis adult was most favored with daylight color 97 > Black 79 = Red 79 = Blue 79 > Green 24 > Yellow 13. We have developed an adult catching device using the most preferred daylight colors and behavioral habits of the Ricania shanthungensis

The capture device consisted of two daylight compact lamps (30W, 20W), a yellow plate, and a catcher using water, and caught about 700 individuals a day. The capturing device has a large amount of capturing because adult is activity at high nighttime temperatures, but the capturing amount decreased significantly when the temperature dropped below 23 ℃. More than 85% of the Ricania shanthungensis adults were trapped for 3 hours from 19:00 to 23:00.

Therefore, it is considered that the adult capturing device for the control of Ricania shanthungensis is used from middle July to late August when the night temperature is over 23 ℃ and lights up from 19:00 to 23:00.

Keywords: Ricania shanthungensis; Light response; Capturing device; Daylight