Phthorimaea operculella (Zell.), a gelechiid native to South America, is a major pest of potato and other solanaceous plants in many countries. Though chemical control has proved unsatisfactory, cultural and biological control methods have proved valuable and merit wider use than heretofore. A list is presented of the parasites of this pest that have been found in South America, together with the countries into which each has been introduced (with the date of introduction) and the status (established, affording some control, etc.). These parasites are the braconids Agathis unicolorata Shenefelt, Apanteles subandinus Blanch. and Orgilus lepidus Mues.; the encyrtids Copidosoma desantisi Annecke & Mynhardt and C. koehleri Blanch.; and the ichneumonids Campoplex haywardi Blanch. and Temelucha sp. It is noted that in Zimbabwe, A. subandinus and C. koehleri are affording almost complete control. Large parts of South America, Central America and Mexico await exploration for further parasites of P. operculella. Surveys in these areas and also detailed biological and ecological studies of promising species are recommended. none