Steatoda nobilis is a spider in the genus Steatoda, known in the United Kingdom as the noble false widow and often referred to as the false widow. As the common name indicates, the spider superficially resembles and is frequently confused for the black widow and other spiders in the genus Latrodectus, which can have medically significant venom. Steatoda nobilis is native to Madeira and the Canary Islands from where it allegedly spread to Europe, and arrived...