Johansson, Niklas, and Björn Cederberg. 2019. “Review of the Swedish Species of Ophion (Hymenoptera: Ichneumonidae: Ophioninae), With the Description of 18 New Species and an Illustrated Key to Swedish Species – Corrigendum”. European Journal of Taxonomy, no. 560 (October). https://doi.org/10.5852/ejt.2019.560.