The Ecuadorian Metopiinae fauna currently includes 17 species, but recent intensive samplings carried out at Southern Ecuador have increased this number. In the present paper, two new species, Exochus tapiarum sp. nov. and Leurus tapichalacae sp. nov., are described and illustrated. Furthermore, four new records of Metopiinae from Ecuador are provided: Colpotrochia beluga Gauld & Sithole, Exochus famellus Gauld & Sithole, E. izbus Gauld & Sithole, and E. ravetus Gauld & Sithole.
Keywords: Darwin wasp; Parasitoid wasp; South America; Taxonomy.
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