Catalogue of the Australian Eumeninae (Hymenoptera: Vespidae) Author Carpenter, James M. Author Brown, Graham R. 0000-0002-4101-3823 thynnini@outlook.com text Zootaxa 2021 2021-01-26 4919 1 1 68 https://doi.org/10.11646/zootaxa.4919.1.1 journal article 8654 10.11646/zootaxa.4919.1.1 c95b424f-11b6-4d97-a30f-b6b36dd1b8ed 1175-5326 4473370 8537A0E1-5F78-47B3-916B-D4B988DC86E1 Phimenes and Delta Giordani Soika (1972: 110) treated Phi de Saussure 1855 (Giordani Soika gave 1856 as the date), as the name for a genus consisting of some species he had previously placed in the genus Delta de Saussure 1855 (e. g. Giordani Soika 1961b ). Cardale (1985) and Brown (2009) did not mention Phi . Carpenter (1986: 68) pointed out that Phi de Saussure 1855 , was a junior homonym of Phi de Saussure 1854 (now a subgenus of the polistine genus Mischocyttarus de Saussure 1853 ), and treated it as a synonym of Delta . This was overlooked by several later authors ( Giordani Soika 1987: 150 ; Giordani Soika & Kojima 1988: 181 ; Gusenleitner 1988: 184 ), who used the unavailable name. Giordani Soika (1992) proposed a replacement name, Phimenes . Carpenter (2008) did not accept Phimenes as a genus separate from Delta , but other authors have (e. g. Borsato 1994 [1993], 1994, 2003; Nugroho et al. 2012 [2011]; Kumar 2013 ; Nguyen et al. 2016 ). In the cladistic analysis by Hermes et al. (2014 , see their fig. 83) Delta came out as more closely related to Katamenes Meade-Waldo 1910 than to Phimenes . Synonymy of Phimenes with Delta therefore requires consideration of the status of Katamenes , which we are not prepared to undertake at this time. Phimenes is accordingly retained as a genus.