BUENOS AIRES, June 6 (Xinhua) -- The South American Confederation of Football (Conmebol) on Monday appointed 24 referees for the America Cup soccer tournament which will be held in the South American country from July 1 to 24.

The Conmebol appointed 12 referees and 12 assistant referees, including one for each category and one for each country that participates in the tournament.

Two Argentine substitute assistant referees were also appointed, the Conmebol said.

Following is the list of the 2011 Americas Cup referees:

Argentina: Sergio Pezzotta (referee) and Ricardo Casas (assistant), Hernan Maidana (substitute-assistant) and Diego Bonfa (substitute-assistant)

Bolivia: Raul Orosco (referee) and Efrain Castro (assistant)

Brazil: Salvio Fagundes (referee) and Marcio Santiago (assitant)

Chile: Enrique Osses (referee) and Francisco Mondria (assistant)

Colombia: Wilmar Roldan (referee) and Humberto Clavijo (assistant)

Ecuador: Carlos Vera (referee) and Luis Alvarado (assistant)

Paraguay: Carlos Torres (referee) and Nicolas Yegros (assistant)

Peru: Victor Hugo Rivera (referee) and Luis Abadie (assistant)

Uruguay: Roberto Silvera (referee) and Miguel Nievas (assitant)

Venezuela: Juan Soto (referee) and Luis Sanchez (assistant)

Costa Rica: Walter Quesada (referee) and Leonel Leal (assistant)

Mexico: Francisco Chacon (referee) and Marvin Torrentera (assistant)