Pest description and damage The immature scales superficially resemble mealybugs in appearance. Mature female scale 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 female scale under the white cotton are red.
For biology, life history, monitoring and management
Azalea (Rhododendron)-Azalea bark scale
See "Scale insect" in:
See Table 1 in: