Beginner Gardening: Bugs, Both fungas & bugs? What's destroying my hollyhocks, 0 by wienerschnitzel

wienerschnitzel wrote:
It's gross and all the leaves are affected. I see the little fella chomping away but are the pustules another problem altogether or did these little green guys hatch out of those brown lesions. Hard to believe they would have survived the systemic insect killer to mature to this stage. And I've tried a fungicide. Nothing seems to stop this from spreading from one bed to another.

This particular plague seems to have affected only the hollyhocks. Even the ones that bloomed were infested/infected and stand leafless brewing their seeds.

Help! Some advice, oh, please.