reference:http://cisr.ucr.edu/brown_widow_spider.html
The balck widow is established in Southern California in early 2000. The back of a brown widow consists of a combination color of coffee and black marks. It has eight legs with color of yellow and black. The brown Widow is displaced black widow spiders which danger to people can be decreased due to the bites of brown widow spider is less toxic than those native western black widow spiders.
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