Landscape help

This is what is "attacking" some shrubs, on some holly and :Andromeda"?: What is it and what is needed, insecticidal soap or what? Fuzzy white "things" on stems, leaves. Looks like the hemlock adelgid. Looks like it kills off sections.


Could you provide a high resolution close-up of representative affected foliage on the andromeda, please? Both surfaces, if possible.



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