 The term "Southern Quechua" refers to the Quechuan varieties spoken in regions of the Andes south of a line roughly east–west between the cities of Huancayo and Huancavelica in central Peru.It includes the Quechua varieties spoken in the regions of Ayacucho, Cusco and Puno in Peru, in much of Bolivia and parts of north-west Argentina.The most widely spoken varieties are Cusco, Ayacucho, Puno (Collao), and South Bolivian.