Francois Louw has been called up to the South Africa squad currently playing in the Rugby Championship.
The squad of 28 for Tests against Australia in Perth (September 8th) and New Zealand in Dunedin (September 15th), was finalised on Wednesday.
Also added are DHL Western Province No 8 Duane Vermeulen, Toyota Free State Cheetahs flyhalf Johan Goosen and DHL Western Province midfielder Juan de Jongh.
"We were not happy with our performance in Mendoza and we are making no excuses for what happened there, but we take full responsibility and have to look forward and get ready for our next tough match, against Australia in Perth," said Springbok Head Coach Heyneke Meyer.
"Untimely injuries to Bismarck du Plessis, Chiliboy Ralepelle, Pierre Spies, JP Pietersen and Bjorn Basson have already hit us hard in the past few weeks. This again provides opportunities for other players to put up their hands.
"We were very keen to give Siya Kolisi an opportunity on this tour, but he is also out injured, alongside a list of other injured or unavailable forwards that include Gurthrö Steenkamp, Heinrich Brüssow, Schalk Burger, Juan Smith and Ryan Kankowski."
Commenting on the four new players in the squad, Meyer said: "If it wasn't for injuries, Duane would have been a Springbok long ago. I also believe Johan has a long career ahead of him at Test match level and we will expose him when and how we feel it will benefit the player and the team best.
"Both Juan and Francois played at the Rugby World Cup last year and are experienced players. Juan covers both positions in the midfield and we opted for Francois because he is a specialist openside flanker, in the absence of Schalk, Heinrich and Siya, that can cover blindside and No 8 as well, while he is also a very useful option in the lineout."