A new species of the inquilinous gall wasp genus Saphonecrus Dalla-Torre & Kieffer (Hymenoptera: Cynipidae: Synergini) from South Korea, Saphonecrus jejuensis Kang & Lobato-Vila, sp. nov.

A new species of the inquilinous gall wasp genus Saphonecrus (Hymenoptera: Cynipidae: Synergini) reared from undetermined cryptic stem galls on Quercus glauca Thunb., Saphonecrus jejuensis Kang & Lobato-Vila, sp. nov.

Taxonomic assessment of the inquiline fauna (Hymenoptera: Cynipidae: Synergini, Ceroptresini) reared from cynipid galls on oaks (Quercus spp.) from South Korea.

A complete taxonomic assessment of the inquiline fauna (Hymenoptera: Cynipidae: Synergini, Ceroptresini) reared from cynipid oak galls collected in South Korea is conducted for the first time. Previously, six species were known from this country (Ceroptres kovalevi Belizin, 1973; Synergus chinensis Melika, Ács Bechtold, 2004; Synergus japonicus Walker, 1874; Ufo koreanus Melika, Pujade-Villar Choi, 2007; and presumably, Saphonecrus chaodongzhui Melika, Ács Bechtold, 2004 and Ufo cerroneuroteri Tang Melika, 2012). The study of new material reared from cynipid galls collected from oaks (Quercus spp.