6mm. On wax currant (Ribes cereum) leaf.
I captured this one and put it in a petri dish. After examining it under a microscope, I'm pretty sure it's a third instar Satyr Comma larvae.
(I used "Life Histories of Cascadia Butterflies" by David James and David Nunnallee to ID this larva.)
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Observed on 10 Jul 2022.