Kim, J.-K. 2017. Descriptions of three new species of the genus Symmorphus Wesmael, 1836 (Hymenoptera: Vespidae: Eumeninae) from South Korea, with an updated revised key to Far Eastern species. Zootaxa. 4350, 2 (Nov. 2017), 234–250. DOI:https://doi.org/10.11646/zootaxa.4350.2.2.