The 137 types of Pentatomidae (Heteroptera) deposited in the Scientific Department of Entomology from the Museo de La Plata were listed. These types belong to 61 spcies. They were contributed by the following authors: Berg (32), Grazia (2), Grazia & Koehler (1), Kormilev (1), Pirán (7), Rider & Chapin (1), Rolston (11), Rolston & Kumar (2), Ruckes (1) and Sailer (2). The name of holotype or "typus" and paratype is given as it is indicated in the description and or label (no new designations are made). For each taxon a complete information about original and valid names, publication, subsequent combination, collection data and condition is given.