Pompilus triquetrus Fox, 1897:244, ♀. ♀, Corumbá, April; ♀, Chapada, November. - Fox, 1897Fox, W.J. 1897. Contributions to a knowledge of the Hymenoptera of Brazil, No. 2. - Pompilidae. Proceedings of the Academy of Natural Sciences of Philadelphia 49:229-283.:259 (key [key to the new described species]). - As Anoplius triqueta: - Fernández et al., 2022Fernández, F., J. Rodriguez, C. Waichert, B. Decker & J. Pitts 2022. Twenty two years later: An updated checklist of Neotropical spider wasps (Hymenoptera: Pompilidae). Zootaxa 5116 (4):451-503. (distribution). - As Anoplius triqueta: - Fernández et al., 2022Fernández, F., J. Rodriguez, C. Waichert, B. Decker & J. Pitts 2022. Twenty two years later: An updated checklist of Neotropical spider wasps (Hymenoptera: Pompilidae). Zootaxa 5116 (4):451-503. (distribution). - As Anoplius triquetrus: - Fernández et al., 2017Fernández, F., V. Castro, J. Rodríguez, C. Waichert & J.P. Pitts 2017. Avispas cazadoras de arañas de Colombia (Hymenoptera: Pompilidae). Proceditor Ltda., Bogotá, D. C., Colombia. (distribution); Santos Rapoza et al., 2019Santos Rapoza, M.dos, J.P. Pitts & C. Waichert 2019. Behavioral records on neotropical species of Anoplius Dufour (Hymenoptera: Pompilidae). Journal of the Kansas Entomological Society 92 (3):569-575. (biology, distribution, prey [Psauridae]); Kurczewski et al., 2024Kurczewski, F.E., R.C. West & C. Waichert 2024. New host records for Nearctic and Neotropical spider wasps (Hymenoptera: Pompilidae). Insecta Mundi 1034:1-32. (distribution, hosts [Pavocosa sp. (Lycosidae)]). - As Pompilus triquetra: - Banks, 1947Banks, N. 1947. Studies of South American Psammocharidae. Part 2. Museum of Comparative Zoology at Harvard College, Bulletin 99:371-486.:406 (listed). - As Psammochares triquetra: - Banks, 1947Banks, N. 1947. Studies of South American Psammocharidae. Part 2. Museum of Comparative Zoology at Harvard College, Bulletin 99:371-486.:406 (listed). - As Psammochares triquetris: - As Psammochares triquetris: