Genus Delta de Saussure

Delta de Saussure 1855: 130, 132, 143, name for divisions II and III of genus Eumenes Latreille in de Saussure 1852, loc. cit. 1: 44, 60.

Type species: Vespa maxillosa DeGeer 1775 [= Vespa emarginata Linnaeus, 1758], by subsequent designation of Bequaert 1925b: 137 [erroneously as Sphex maxillosus DeGeer, correctly in 1926b: 487].

Erinys Zirngiebl 1953: 173, subgenus of Eumenes Latreille [junior homonym of Erinys Rye 1876].

Type species: Vespa unguiculata Villers, 1789, by monotypy.

Alfieria Giordani Soika 1934b: 436, genus.

Type species: Eumenes anomalus Zavattari 1909, by original designation and monotypy.

Taxonomy: Neave 1939: 111 (Alferia [!]).— Blüthgen 1953: 3 (genus); 1961: 214, footnote (syn.: Erinys Zirngiebl); 1963: 205 (homonymy of Erinys Zirngiebl).— Cardale 1985: 170–173 (cat. Australian species).— Hermes et al. 2014: 453 (syn.: Alfieria Giordani Soika).

Distribution: Widespread in the Old World, from Africa and Eurasia to Australia; one species has been introduced into the New World, and several species into Hawaii.

Ethology: The species build mud nests consisting of jug-like cells on the substrate, and provision them with caterpillars.