Nasty little sap suckers. Aphids target my daylilies too. I am more worried about them starting a virus among my cannas.
Springtime is daylily cleanup for me, pulling out dead leaves and cleaning up the clump. I had intended cutting back this fall for the rust but that idea went by the wayside..
Nice steady rain now, the more the better.

@Kabby,I don't know much about virus among my cannas, but the darn Leaf Rollers drive me batty. Each year I say I am going to do a better job at killing them and they always get ahead of me. This year I managed to cut all the cannas back to the ground during the fall clean up , hoping that will help. I bought some spray for them, but never seem to get the timing right with it.
I managed to pick up five more truck loads of leaves today, that tells you how little rain we actually got, nothing more than a very slight drizzle at the heaviest.