Gu, D., & Murakami, Y. 1990 Ecological studies on the pine needle Hemiberlesian scale, Hemiberlesia pitysophila Takagi (Homoptera: Diaspididae) and its parasitoid Coccobius azumai Tachikawa (Hymenoptera: Aphelinidae).. Science Bulletin Faculty Agric. Kyushu Univ. 45(1-2): 31-36.

Notes: Abstract: This scale species is an important pest of pine trees; oriental distribution; accidentally introduced into China in mid 1980's; biological and behavioral characteristics of parasitoid studied. Keywords: biological control.