Okay. Today I went to the mountains because I just needed to see them and I'm going stir-crazy recovering from knee surgery. So my wife took me up there. One of the places we stopped was Julian Price Park. I turned the needles over on a hemlock that had been treated against hwa and I saw this:

What is it??! My suspicion is some kind of egg. I could even see tiny dots in the center of some of them, as if something is growing.