Nguyen, L.T.P. , Tran, N.T. , Bui, D.T. and Ljubomirov, T. 2021.

Contribution to the genus Pararrhynchium de Saussure (Hymenoptera: Vespidae: Eumeninae), with description of two new species from Vietnam

. Zootaxa. 5082, 2 (Dec. 2021), 159–168. DOI:https://doi.org/10.11646/zootaxa.5082.2.5.