Nick De Luca, the experienced 30-year-old centre, has joined the Scotland squad for the remainder of their summer tour.De Luca, who won his most recent cap (his 41st) against Australia last November, has been added to the squad for the matches against Argentina in Cordoba on Friday and then South Africa in Port Elizabeth a week on Saturday.Dumfries born De Luca has left Edinburgh Rugby and will be playing for Biarritz in the 2014-15 season. De Luca has faced Argentina on five occasions, winning three of the games, all on Argentine soil.