Delta

Nugroho, Hari, Kojima, Jun-Ichi & Ubaidillah, Rosichon, 2013, Review of potter wasps with a petiolate metasoma excluding so-called " Zethinae " (Hymenoptera: Vespidae: Eumeninae) in the Lesser Sunda Islands of the Indonesian Archipelago, Zootaxa 3608 (1), pp. 1-25 : 8

Genus Delta de Saussure 1855

Delta de Saussure 1855: 130, 132, 143, name for divisions II and III of genus Eumenes Latreille 1802 in de Saussure 1852: 44, 60; raised to the generic rank by Giordani Soika (1961). Type species: Ve s p a maxillosa De Geer 1775 [= Vespa emarginata Linnaeus, 1758 ], by subsequent designation of Bequaert 1925: 137 [erroneously as Sphex maxillosus De Geer , correctly in Bequaert 1926: 487].

Erinys Zirngiebl 1953: 173 (as subgenus of Eumenes Latreille 1802 ), nom. praeocc., nec Erinys Rye 1876 ( Coleoptera : Staphylinidae ). Type species: Ve s p a unguiculata Villers 1789, by monotypy.

We tentatively adopt in this paper six species of genus Delta which are recorded from the Lesser Sunda Islands (Carpenter, pers. comm.; Nugroho et al. 2012). However, the generic affilliations of D. eremnum , D. sciarum and D. wieneckei , are yet arguable. That is, van der Vecht (1959) grouped D. sciarum and D. wieneckei in the " Eumenes curvatus " (= Phimenes curvatus ) group, which is characterized by the long and thin digitus of the male volsella, and D. eremnum is very similar to D. sciarum .