but here is the comment from David Ferguson on another image from my area, circa Dec 2010:

"Should be M. oregonensis in that location, but apparently (???) the only way to tell them apart is that M. oregonensis runs darker as adults, and averages larger. Supposedly, M. oregonensis is from the Sierra westward to the coast and M. manni is east on the dry side (except sneaking west into western San Diego County). More recent records seem confused, or in fact the two occur together all along the coast. I suspect there are lot of misidentifications (and further I suspect that they are one species anyway)".