1) Heavy euonymus scale infestation   2) Female euonymus scale with ladybird beetle predator 
 3) Immature male euonymus scale

EUONYMUS SCALE - Unaspis euonymi, or euonymus scale a very common pest of euonymus and pachysandra. Although the individuals are small, infestations are often dense and plainly visible. The immature males are elongated and white. The mature male is a tiny, two-winged insect. The female is 1.5mm long, dark and shaped like an oystershell. The eggs and crawlers are both tiny and yellow. The first damage is yellow spotting on the leaves. The stems may be so encrusted with the scale that whole branches or the entire plants die. All stages of development are present most of the year. Removal and destruction of heavily infested branches can help reduce populations. Application of horticultural oil in late May through June and again in late July through August will target the vulnerable crawler stage. Repeat applications during these periods may be necessary.