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Arachnologists at the California Academy of Sciences need your help documenting the presence and distribution of Zoropsis spinimana spiders. Although harmless to humans, this spider competes with local species and is considered invasive. Participants can use a simple digital camera to document the presence of this spider, and, if comfortable collecting the spider, send in actual spider specimens. With the help of citizen scientists, researchers can study how the Zoropsis spider population is spreading in the Bay Area.