Choi, K.S., Lee, S.G., Kim, J.K., & Park, J.D. Choi, K.S., Lee, S.G., Kim, J.K., & Park, J.D. 1995 [Role of the coccinellid beetle, Harmonia axyridis in the biological control of the black pine bast scale insect, Matsucoccus thunbergianae.]. Journal of Forest Science (Seoul) No. 51, 115-118.
Notes: The predatory capacity of H. axyridis, a natural enemy of M. thunbergianae in black pine (Pinus thunbergii) forests in Korea Republic, was studied. Harmonia axyridis, which comprised about 70% of the total number of adult beetles captured (n=264), killed 90% of M. thunbergianae in a heavily infested P. thunbergii forest stand in Samcheonpo, Kyungnam, in one week. Studies over 24 h indicated that the number of individuals of M. thunbergianae consumed by 2nd instar, 3rd instar and adult H. axyridis were 1.5, 3.5 and 6.3, respectively. Results suggest that H. axyridis would be an efficient predator of M. thunbergianae.