Experienced lock Eben Etzebeth will captain the Springboks in the injury-enforced absence of Warren Whiteley, SA Rugby confirmed on Wednesday.
Loose forward Siya Kolisi, who captained the same Stormers' team Etzebeth played in, will serve as Springbok vice-captain during the upcoming Rugby Championships.
Etzebeth (25) led the Springboks in the final Test of the three-match series against France in June, when Whiteley was ruled out of action because of a groin injury.
Whiteley -- who was named as Adriaan Strauss' successor by Coetzee in June -- missed the remainder of the Lions' Vodacom Super Rugby campaign as a result of the injury, and has been ruled for at least six more weeks. As a result, the 29-year-old eighthman is set to miss the Rugby Championships home and away legs against Argentina as well as the Springboks' away matches in Australia and New Zealand.
"Eben did an excellent job against France in Johannesburg, when he had to step in at short notice after the late withdrawal of Warren. He enjoys the respect of his teammates and also commands respect on and off the field," said Springbok coach, Allister Coetzee.
"He is well supported by our strong leadership group which consists of Siya, Tendai Mtawarira and Elton Jantjies."
Etzebeth has played in 57 Springbok Tests since making his debut on 9 June 2012 against England in Durban, when he was 20 years old. The Springboks start their campaign against the Pumas on 19 August in Port Elizabeth and then travel to Argentina a week later, for the return leg in Salta where they are set to play in a limited-edition red jersey, which has been commissioned to mark the 25th anniversary of rugby unity in South Africa.