Vol. 71 No. S2 (2023): Minimalist revision of Mesochorus Gravenhorst, 1829 (Hymenoptera: Ichneumonidae: Mesochorinae) from Área de Conservación Guanacaste, Costa Rica, with 158 new species and host records for 129 species
The purpose of this research is to diagnose and name 158 new species of Costa Rican Mesochorus Gravenhorst, 1829 (Ichneumonidae) from Área de Conservación Guanacaste [ACG] in northwestern Costa Rica, and to provide host records for 129 of these.
