Lions flank Jaco Kriel has been ruled out of action for three weeks with a knee injury.
Kriel sustained the injury during the Lions' 24-21 win against the Jaguares on Friday.
Wing Madosh Tambwe has also not been included in the Lions squad for their Australian tour, as he will stay with the Junior Boks squad.
Lions touring squad:
Forwards – Jacques van Rooyen, Corné Fourie, Ruan Dreyer, Johannes Jonker, Hencus van Wyk, Akker van der Merwe, Robbie Coetzee, Malcolm Marx, Franco Mostert, Andries Ferreira, Lourens Erasmus, Ruan Ackermann, Warren Whiteley, Kwagga Smith, Cyle Brink, Robert Kruger.
Backs – Faf de Klerk, Ross Cronjé, Dillon Smit, Elton Jantjies, Courtnall Skosan, Harold Vorster, Jacques Nel, Lionel Mapoe, Sylvian Mahuza, Andries Coetzee, Anthony Volmink.
Photo: Carl Fourie/Gallo Images