Hiked up to Mt. Hillyer from Santa Clara Divide Road. Parked at Rosenita Saddle and walked up to the broad summit area. It is a large area to explore with lots of rocks to climb around on. Lots of mountain bikers too.
Named the Cow Killer, as they're supposed to inflict a sting painful enough to kill a cow. It's a wingless wasp. Really cool bastards, coming in orange, red, and yellow. Never been stung by one.