Lopes, Rogério B., and Fernando B. Noll. 2024. “Taxonomic Notes on the Zethus Olmecus De Saussure, 1875 Species Group (Hymenoptera, Vespidae, Eumeninae), With the Description of Five New Species”. Zootaxa 5437 (3). Auckland, New Zealand:363-83. https://doi.org/10.11646/zootaxa.5437.3.3.