First Margined White I’ve ever seen or heard of in Seattle! And it visited the butterfly meadow I’ve been working on to create better butterfly habitat in for some years now! At first, I assumed it was going to be a cabbage white, which I actually don’t see very often in this opening in the woods But with darkened veins and no dark wing tips, I think I indeed got a margined white here! I already have a lot of our native Tower Mustard - Turritis glabra (formerly Arabis glabra) growing here if it wants to come back to lay eggs.
14’c Part Sun part cloud . Transect- Peterson Sagebrush Loop. Stopped for a rest between patrolling.. first time I’ve ever gotten close enough to a marble for a decent pic! iNat says large marble, and it was large cabbage white sized, but the upper wing whiteness and darker marks looked more like the pictures of desert in my books, and this is a sagebrush/grasslands hilltop
I believe the upper of the two individuals in the first image might be a Labrador Sulphur. I am uncertain what the lower individual is. Perhaps Christina Sulphur? This spot on Mt Helena had at least 20 Sulphurs flitting about. I took a lot of pictures- but most show them in a closed wing posture.