ABSTRACT The purpose of this short communication is to provide information on the depository for the primary types of the new species described by Alvarenga et al. (2015) and thus validate the names suggested therein. The depository for the primary types of the new species Emersonella appendigaster Alvarenga, Costa & Hansson, 2015 and Emersonella frieirocostai Alvarenga, Costa & Hansson, 2015 is the Museu de Zoologia, Universidade de São Paulo, São Paulo, Brazil (MZSP).

Emersonella Girault, 1916 is a wasp genus including species that parasitize Chrysomelidae (Coleoptera) eggs, mainly Cassidinae. It occurs only in the Americas, and is primarily distributed in the Neotropical Region. In this paper two new species of Emersonella from the Atlantic Forest of southeastern Brazil are described and compared to similar species. Emersonella appendigastersp. nov. is characterized by an elongate last gastral tergite in female, thoracic dorsum flat, femora and tibiae yellowish in female, malar sulcus absent, frontal suture slightly down-curved laterally, eyes with scattered hairs, frons and vertex smooth, and propodeum smooth with small anteromedian foveae. Emersonella frieirocostaisp. nov. is characterized by an elongate gaster in the female, at most 1.3 times as long as mesosoma and pointed at apex, propodeum with two large anterolateral foveae, pronotum hardly visible in dorsal view, with posterior part smooth, transverse pronotal carina present and malar sulcus absent. Both species are egg parasitoids of Metriona elatior (Klug, 1820) (Chrysomelidae) which feeds on Solanum viarum Dunal (Solanaceae).