Nieminen, M.; Hansson, C.; Kekkonen, M.; Vikberg, V. Mesopolobus Incultus Auct. (Hymenoptera: Pteromalidae) Contains Two Distinct Species: Mesopolobus Incultus (Walker, 1834) and Mesopolobus Amyntor (Walker, 1845). Entomol. Fennica 2018, 29, 175-183.