The known occurrences of Austrocylindropuntiapachypus (K. Schumann) Backeberg in Peru are a series of isolated populations in the coastal valleys from the Rio Eulalia in the south of the range near to the type locality, to the Cordillera Blanca east of Casma. From recent observations, it is now possible to extend the distribution north into La Libertad where very extensive new populations have been found.