Argentina will be without outstanding young flanker Pablo Matera for their away Rugby Championship matches against the All Blacks and Wallabies.
The 21-year-old blindside flanker has a partial shoulder dislocation from Sunday's narrow loss to the Springboks in Salta.
An MRI scan confirmed the damage and he will miss at least the next two matches.
Matera has made a big impact in the international game, quickly claiming 12 test caps since debuting last year. He has also been scooped up by English club Leicester.
Pumas coach Daniel Hourcade has stuck with the squad that pushed the Springboks to the limit in Pretoria and Salta over the last fortnight for the Australasian tour.
He has added wing-fullback Juan Imhoff, flanker Benjamin Macome and hooker Santiago Iglesias Valdez to his touring squad.
Argentina have been training at their Pacheco base ahead of their departure tomorrow for New Zealand.
They will play the All Blacks in Napier on September 6 and the Wallabies on the Gold Coast on September 13.
Argentina touring squad: Horacio Agulla, Matias Alemanno, Marcos Ayerza, Rodrigo Baez, Marcelo Bosch, Matias Cortese, Agustan Creevy, Tomas Cubelli, Jeronimo De la Fuente, Juan Martin Hernandez, Juan Martin Fernandez Lobbe, Mariano Galarza, Lucas Gonzalez Amorosino, Santiago Gonzalez Iglesias, Santiago Iglesias Valdez, Ramiro Herrera, Juan Imhoff, Martin Landajo, Tomas Lavanini, Juan Manuel Leguizamon, Benjamin Macome, Manuel Montero, Lucas Noguera Paz, Bruno Postiglioni, Nicolas Sanchez, Leonardo Senatore, Nahuel Tetaz Chaparro, Joaquin Tuculet.
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