First of all, nice ID thread; it's nice to see so much info. Honestly, that looks like the same species of Camponotus I have found a whole bunch of. Tell me if the one in this ID thread of mine (http://forum.formicu...y-ca-4-24-2014/) looks like it, since I can't see yours with a whole lot of detail. Here's another non-microscope picture of mine. Keep in mind, of all of these queens, the gasters have varying amounts of orange and black. Also, as it gets bloated, that changes the coloring and pattern too.
I'm certainly no expert, but I have been learning to ID ants in California for a while now, especially Camponotus.
I have been trying to figure this one out for some time now (assuming yours is the same species as mine). Every time I key it or associated workers, they come out to C. vicinus. I know that C. vicinus can range in color to that similar to C. semitestaceus (like this queen), all the way to completely black, so it is possible. I just feel like C. vicinus with this coloring would not be as abundant as these queens have been in the areas I have found them. Dr James C. Trager suggested that it could be C. sansabeanus, which I have also arrived at while keying it out sometimes too, but the scapes are just so much longer than they should be for that species. So, if your queen IS the same species as mine, I don't think you're gonna be getting a proper ID on it any time soon. So many of these ground nesting Camponotus here in CA are just so hard to tell apart.
BTW, did you find this one wandering, or did you dig it up? And yeah, plastic test tubes are horrible haha.