Host plant list of the scale insects (Hemiptera: Coccomorpha) in South Korea Suh, Soo-Jung Insecta Mundi 2020 2020-03-27 2020 757 1 26      16.  Alnus japonica(Thunb.) Steud. (Betulaceae)  Chionaspis alnus(Takagi) (Diaspididae)[ Paik 1978]  Heliococcus bohemicusSulc (Pseudococcidae)[Kwon et al. 2003a]  Pseudococcus comstocki(Kuwana) (Pseudococcidae)[ Paik 1978]