Download high resolution image here.

I found a mix of several males and females (with and without anterior pronotal horns, respectively) of this species within the well-excavated core of a relatively soft and spongy polypore fungus growing on the dead branches of Quercus oblongifolia near Florida Station, Santa Rita Experimental Range during Bugguide Gathering 2013. It keys to C. californicus in the Ceracis species key of Lawrence 1971(1), and is consistent with the habitus drawing and range of that species provided in Lawrence 1967(2). Expert confirmation is appreciated. I posted images of a female here:



This image is from a CombineZP processed stack of 184 images with a 5.6 µm step taken with a Mitutoyo M Plan APO 10×/0.28 ∞/0 mm microscope objective + Nikon 200 mm F4 AIS telephoto lens + Nikon D300 camera (magnification 10×; technique described here).