Science Bulletins: Brown Widow Spiders Invade Southern California 0 Randall Gross US NewsAugust 2012Monday, August 20, 2012 at 2:41 pm PDT • Views: 1,806 Bigger Relatives Black Widows Brown Widow Spiders California Ecosystems Diego Metropolitan Areas Invasive Brown Widows Native Black Widows Los Angeles Residential Locations Southern California Toxic Urban Ecosystems Venomous Black Widow Venomous Bites Widows Brown Widows Fewer Black Widows Preying Science Bulletins