It's a little hard to make out, but it looks like a spittlebug. They're not hard to get rid of. Just wash it off outdoors, or if they keep coming back, a mild organic insecticidal soap should work.

Spittlebugs make little masses of bubbles on plants, and they're parasites, but not very damaging unless there are a lot of them. You can also just take them off with your finger--they're not very persistent.

Rick in CT

Couldn't get my 'smart phone' to focus better, you could be right about it being spittlebug, though i haven't seen it before in the backyard, nor was there bubbles around it. As long as they're not mealy bugs, I'm good. I spotted a few before on another plant, mealy bugs seem about 1/3 smaller.

Thanks for reply Rick.

I struggle with a not-so-smartphone too, and am told they make a macro lens for it for not a lot if money. If it's a spittlebug, you'll probably find the bubbly masses elsewhere outside. What zone are you in?

--Rr

I'm in Melbourne, Australia. Just gone into autumn now.

We all them Froghoppers here in the UK, that's an immature one, when adult they're brownish in colour and jump a mile when you poke 'em! They're sap suckers, so not really plant friendly.