I found this queen May 30th 2015 in Angelus Oaks, California. I was collecting C. laevigatus queens from giant downed trees in the forest, when later I found out one of them was C. quercicola.
1. Location of collection: Angelus Oaks, California.
2. Date of collection: 6-5-2015.
3. Habitat of collection: Pine/Oak Forest.
4. Length (from head to gaster): 16mm.
5. Color, hue, pattern and texture: All black with brown at the tips of its legs and antennae; sparse gold hairs, numerous on cheeks; fairly dull.
6. Distinguishing characteristics: No clypeal carina; large head; elongated eggs.
About three days later, this queen laid three very elongated eggs, similar to those of C. laevigatus.