His Buenos Aires club said that Manuel Leguizamon had been called up as Senatore's replacement for their upcoming matches in South Africa.
Earlier Jaguares skipper and Argentina hooker Creevy was suspended for one week after a dangerous tackle on Jean Deysel in the same match.
Creevy, 31, will miss a round 13 fixture against the Golden Lions at Ellis Park stadium in Johannesburg on Saturday.
South African loose forward Deysel had to be stretchered off after the first-half incident.
Super Rugby judicial officer Robert Stelzner said he did not believe the tackle was intentional and the excellent disciplinary record of Creevy also played a role in the lenient sentence.