Loktionov, V.M. and Lelej, A.S. 2018. Discovery of the spider wasp genus Sphictostethus Kohl, 1884 (Hymenoptera: Pompilidae: Pepsinae) in New Guinea, with description of two new species. Zootaxa. 4429, 2 (Jun. 2018), 295–302. DOI:https://doi.org/10.11646/zootaxa.4429.2.5.