The genus Euodynerus Dalla Torre in Europe and the Maghreb (Hymenoptera: Vespidae: Eumeninae) Author Selis, Marco Via dei Tarquini, 22 - 01100 Viterbo, Italy Author Fateryga, Alexander V. T. I. Vyazemsky Karadag Scientific Station-Nature Reserve of RAS-Branch of A. O. Kovalevsky Institute of Biology of the Southern Seas of RAS, Nauki Str. 24, Kurortnoye, 298188 Feodosiya, Russia Author Cilia, Giovanni CREA Research Centre for Agriculture and Environment (CREA-AA), Via di Corticella 133, 40128, Bologna, Italy text Zootaxa 2024 2024-11-08 5537 2 151 194 http://dx.doi.org/10.11646/zootaxa.5537.2.1 journal article 10.11646/zootaxa.5537.2.1 1175-5326 14239439 8A7AF43F-0E83-48A0-950E-0716CDC753A6 Euodynerus ( Pareuodynerus ) posticus (Herrich-Schaeffer, 1841) ( Figs 12H, K ; 14M ; 15G, P, S, U ; 16B ) Odynerus posticus Herrich-Schaeffer, 1841: 176 , pl. 9, ♀ — type locality not stated ( type destroyed). Odynerus innumerabilis de Saussure, 1853: 154 (key), 189, ♂ (in subgenus Leionotus ) — “L’Algérie” (MNHN). Odynerus graphicus de Saussure, 1853: 155 (key), 191, ♀ (in subgenus Leionotus ) — “ Le midi de la France ” (MNHN). Odynerus differens Morawitz, 1895: 478 , ♂ , ♀ (in subgenus Lionotus ) — [ Georgia and Azerbaijan ] “ Transcaucasia : Lagodechy ; Zakataly ” ( syntypes ZISP [examined]). Odynerus cephalicus Blüthgen, 1944: 32 , 34, ♂ (in subgenus Pareuodynerus ) — “Argentat (Dept. Corrèze, Südfrankreich)” (MNHN). Pseudepipona postica punctatissima Giordani Soika, 1952: 382 , ♂ (in subgenus Euodynerus ) — “ Anatolia , Gyaur daglari” (NMPC). Euodynerus posticus posticus var. notatiformis Blüthgen, 1955a: 155 , ♀ (in subgenus Pareuodynerus ) — “Sasso-Furbara ( Lazio )” (ZMB). Unavailable name according to Art. 45.5 of ICZN (1999) , because originally described as infrasubspecific name. Euodynerus posticus punctatissimus var. nahariensis Blüthgen, 1955b: 28 , ♂ , ♀ (in subgenus Pareuodynerus ) — “Nahariya ( 10 km . N. of Acre)” ( holotype female ZMB). Unavailable name according to Art. 45.5 of ICZN (1999) , because originally described as infrasubspecific name. Distribution. Mainly Western Palaearctic, ranging from the Iberian Peninsula and the Maghreb in the West to the Caucasus and Iran in the East ( Fateryga et al. 2019 ). Ma et al. (2017) include E. posticus in their key to the Chinese Euodynerus species , but in fact it was never recorded from the Eastern Palaearctic. Notes. The available genetic data show a certain level of substructuring in Euodynerus posticus , with an eastwest gradient ( Fig. 10 ): the specimens from the western Mediterranean (Iberian Peninsula and Maghreb) differ by 2.29% from ones from the Italian Peninsula and by 6.06% from the eastern ones, while the Italian ones differ by 3.75% from the eastern ones. The genetic distances are low and not associated with obvious morphological differences, confirming E. posticus as a species with a wide Palaearctic distribution.