From BugwoodWiki
Introduction
Identification
Biology
As a biological control
A beetle, Rhyzobius (=Lindorus) lopanthae, develops as a predator of scales, particularly various armored scales (Diaspididae). Some soft scales (Coccidae) may be eaten, although effectiveness of the beetle is inhibited by the presence of honeydew. The scale picnic beetle, Cybocephalus nipponicus, is a small black (female) to black/orange (male) beetle. It feeds on armored scales, including euonymus scale, San Jose scale, and elongate hemlock scale. It may also be a predator of other scales.
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