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Nguyen, L.T.P. 2015.

Two new species of the genus Pararrhynchium de Saussure (Hymenoptera: Vespidae: Eumeninae) from northern Vietnam

. Zootaxa. 3974, 2 (Jun. 2015), 170–176. DOI:https://doi.org/10.11646/zootaxa.3974.2.2.