“…Described for the first time for the Mediterranean (Chevreux 1908, Chevreux andFage 1925), A. acutum currently has a worldwide distribution, having as its main vector the hulls and ballast water of ships (Winfield 2011). This species has been recorded from Japan (Irie 1957(Irie , 1958, Korea (Jung and Kim 2007), Brunei (Hossain and Hughes 2016), Spain (Ros andGuerra-García 2012, Gavira-O'Neil et al 2015), South Africa (Mead et al 2011), Tunisia (Zakhama-Sraieb et al 2006, United States (Bousfield 1973, 1997, Lecroy 2004 Gulf of Mexico (Winfield et al 2006(Winfield et al , 2007(Winfield et al , 2011 and Venezuela (Martin et al 2002).…”