Two lepidopteran pests and damage on the cones of Abies koreana (Pinaceae) in Jeju Island, Korea
2018
Shin, Young-Min | Nam, Jong-Woo | Kim, Dong-Kap | Byun, Bong-Kyu | Kim, Il-Kwon
In the present study, we report two lepidopteran pests and their damage on the cones of Abies koreana E. H. Wilson from Mt. Halla, Jeju, South Korea: Cydia kamijoi Oku and Dioryctria abietella (Denis & Schiffermüller). The former is new to Korea, and the latter is well known as an insect pest on cones of various coniferous trees. Larvae of these species bore into the immature cones of the host tree. Damaged cones can be easily distinguished by reddish brown frass piled around the holes that were made by the moths, and the cones that are severely damaged become crooked and eventually are folded in half. The average damage rate on the cones was 75.3±2.34% from the survey sites in 2014, but the insect damage could not be found again from the sites as the host did not bear any cones in 2015. Descriptions and images of C. kamijoi and D. abietella are provided along with a list of host species and distribution.
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