Requested reference
Kulczycki, A., Legittimo, C. M., Simeon, E. & Di Pompeo, P. (2012). New records of Steatoda nobilis (Thorell, 1875) (Araneae, Theridiidae), an introduced species on the Italian mainland and in Sardinia. Bulletin of the British Arachnological Society 15(8): 269-272. doi:10.13156/arac.2012.15.1.269 -- Show included taxa