What is on my aster leaves?

Randolph, NJ

Today I noticed there was something all over the leaves of my Aster 'Alma Potschke'.

Is it a bug, insect eggs, a disease, something else? Do I need to get rid pf it and if so, how? Are my other plants in danger?

Thumbnail by a2zmom
Raleigh, NC(Zone 7b)

Looks like a lace bug... a quick web search suggests Corythucha marmorata which feeds on the aster family.

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