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Dien, B.T., Manh, N.T., Thai, M.V., Thuong, V.T. and Lien, N.T.P. 2021. Taxonomic notes on the genus <i>Ectopioglossa</i> Perkins, 1912 (Hymenoptera: Vespidae: Eumeninae) from Vietnam, with new records of two species and key to species. Academia Journal of Biology. 43, 4 (Dec. 2021), 67–73. DOI:https://doi.org/10.15625/2615-9023/16352.