(Alvesgaspar/Wikimedia commons/CC BY-SA 3.0) =============================================================== A tiny brown invasive species of spider that's creeping its way across the UK has a dangerous reputation for dissolving flesh, one that many experts have argued isn't deserved. There's now compelling evidence suggesting that stories of the false widow spider (Steatoda nobilis) causing horrid skin infections has at least some basis in fact. The false widow has called the UK home ever since it was spotted on its shores in the 1870s, most likely having hitched a ride from Madeira and the Canary Islands off the African coast. In recent decades its range has...