This group was revised by Schmidt 2015 (1) with several changes and one new species added. You might want to check the current status at BOLD. What's the ID? I'm guessing the status has not changed.

... BOLD has revised the ID of this specimen to Lacinipolia acutipennis, as well as two additional specimens that I sent to BOLD. Thank you Steve for informing me of this ID revision.

That's the species I was wondering about. The paper has a section on separating it and pensilis. I see now that the updated range map does not actually show pensilis in your area which is not to say that won't change. There are, however, two other very similar species within the complex in or near Lassen Co., L. sareta and dimocki, so you might want to keep sending similar examples you find in the future to BOLD.

I moved a couple of Mark's very different examples from San Diego to L. acutipennis. The species is highly variable. The paper notes "Two phenotypes have been recognized as separate species, L. doira of the Great Basin (Figs 49–51) and L. subalba of southern California (Figs 43–45)." The paper lumps the two under L. acutipennis but I imagine they could be re-split. In any case, it looks like we may have examples of both forms.