The bugs in the Bay Area are a lot meaner than in Seattle. I got bit in the leg a few days ago and the spot still itches. It's also unhappy looking, rather like a bruise with a red welt in the center. This is the third or fourth time I've been bitten since I got down here, too. This, compared to being bitten by a mosquito perhaps once all of last year in Seattle.
I guess the area is very livable for all forms of life, not just humans and orange trees.