In this study two new species of Idris Foerster (Platygastridae) are described and illustrated: I. argyrodes sp. nov. and I. scytodes sp. nov., from specimens reared from eggs of the spider species Argyrodes elevatus Walckenaer (Theridiidae) and Scytodes sp. (Scytodidae) collected in Minas Gerais State, Brazil. Scytodidae is a new host family for Idris.
Se describen e ilustran dos nuevas species de Idris Foerster (Platygastridae): I. argyrodes sp. nov. e I. scytodes sp. nov., emergidas de sacos de huevos de arañas de las species Argyrodes elevatus Walckenaer (Theridiidae) y Scytodes sp. (Scytodidae) recolectadas en el estado de Minas Gerais, Brasil. Scytodidae es una nueva familia hospedadora para Idris.