Eriococcus azaeleae
Pest description and damage The immature scales superficially resemble mealybugs in appearance. Mature female scales are about 0.125 inch in length and appear like white cottony sacs, often located on twigs and stems of azalea, especially in branch axils. Eggs, crawlers, and the scales under the wax are red.
For biology, life history, monitoring and management
See:
Azalea (Rhododendron)-Azalea bark scale
See "Scale insect" in:
Management-chemical control
See Table 1 in: