Spiders are everywhere in California, but we don't have chiggers, June bugs, mayflies, many mosquitoes and other insects that plague the rest of the country. read more
There is a largish house spider called Zoropsis you might find in the South Bay; check on the Cal Academy of Sciences website (or have somebody else check it!) for its current range. But you know, tarantulas and Zoropsis spiders are completely harmless. read more