Sharkey, M.J., Baker, A., McCluskey, K., Smith, A., Naik, S., Ratnasingham, S., Manjunath, R., Perez, K., Sones, J., D’Souza, M., St. Jacques, B., Hajibabaei, M., Whitfield, J., Arias, D., Solis, A., Metz, M., Burns, J., Zuñiga, R., Phillips-Rodriguez, E., Espinoza, B., Chacon, I., Hebert, P., Hallwachs, W. and Janzen, D. 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. Revista de Biología Tropical. 71, S2 (Aug. 2023), e56316. DOI:https://doi.org/10.15517/rev.biol.trop. v71iS2.56316.