Using the little eye-spots, straight median FW line, outer FW/HW irregular shapes, and the paler crescent on FW border, matched with Enyo lugubris on Moth Photographer's Group specimen plate 40a. Google search of Enyo lugubris shows image that appears here on Bugguide replete with fanned tail. The Jiml64 moth is worn (balding thorax), but the major ID points show up well. Mournful was my first impression--it just looks mournful!

They look like spider egg sacks. Or promethea cocoons but the are a lot bigger than them. Jacob

The Sevin won't do any good. It may not be critters of any sort. The two things that come to mind are a slime mold on the rotted stems. Or a nasty soil-borne fungus. If either one of those, the stems will be soft and/or mushy at the base. Send the images to your County's extension Service Office. They will know the common diseases in your area. Or to a large independent garden center. Folks at one of those places should know the common problems in your area. Then please come back to tell us what they told you.

"Spring Snow" supposedly has single blossoms? At least, according to what I've read. Besides, the tree I'm trying to identify is definitely an upright/inverted cone variety. It's not nearly as wide or tall as most crabapples I've seen. The tree was already in place when my friend moved into her home, so she too is unfamiliar with the cultivar. The fruit is red, approx. 1/2" and persistent. I've not seen another one like it. When I look at the tree, it's most striking characteristics are the deep magenta buds followed by the prolific display of flowers - which definitely have a pinkish-red tint to the outer petals. I would be convinced it's an Adirondack, except for the double blooms and persistent fruit.