Yeh, W.-C., Lu, S.-S. 2017. New record of the genus Zethus Fabricius from Taiwan, with the description of Z. taiwanus sp. nov. and a key to the species of trimaculatus-group (Hymenoptera: Vespidae: Eumeninae). 4324 (3): 529–540. https://doi.org/10.11646/zootaxa.4324.3.7