Synergus umbraculus (Olivier, 1791)

—Distribution in the Eastern Black Sea Region: Bayburt, Giresun, GümüŞhane and Ordu (Figure 15)

—Host galls in the Eastern Black Sea Region: A. anatolicus, A. assarehi, A. coriarius, A. infectorius, A. kollari, A. lignicolus, A. mitratus, A. quercustozae and C. baskalei .