While dealing with some piles of old lumber in San Diego, encountered a lot of unpleasant looking spiders that superficially resembled Black Widow Spiders and have a red hour glass on ventral surface:
Apparently a relatively new toxic spider in southern california, related to Black Widow species:
"brown widow spider" california distribution
http://cisr.ucr.edu/brown_widow_spider.html
http://www.cdfa.ca.gov/phpps/PPD/PDF/Latrodectus_geometricus.pdf
http://www.mdconsult.com/das/article/body/160216781-2/jorg=journal&source=MI&sp=&sid=/N/702787/s0196064408020593.pdf?issn=0196-0644
The cure for a fallacious argument is a better argument, not the suppression of ideas.
-- Carl Sagan