New records for crown wasps in Europe (Hymenoptera, Stephanidae)

New occurrence records for two species of Hymenoptera Stephanidae are provided from several states of Europe. Stephanus serrator (Fabricius, 1798) is recorded for the first time for Portugal and with precise locality for Switzerland. Moreover, it is recorded for the first time in the following regions: Navarre (Spain), Wallonia (Belgium), Hesse, Berlin and Bavaria (Germany), Aosta Valley, Lombardy, Veneto, Abruzzo, Campania and Calabria (Italy), and Attica (Greece). Megischus anomalipes (Foerster, 1855) is recorded for the first time in mainland Portugal and Campania (Italy).