The superfamily Proctotrupoidea is cosmopolitan and diverse group comprising 11 extant families: Austroniidae, Diapriidae, Heloridae, Maamingidae, Monomachidae, Pelecinidae, Peradeniidae, Proctorenyxidae, Proctotrupidae, Roproniidae, Vanhorniidae. But, Recently a separate superfamily Diaprioidea was recognized to include Diapriidae, Monomachidae and Maamingidae (Sharkey, 2007; Sharkey et al., 2012). Among them, three families are found in South Korea: Heloridae (Choi et al., 2012), Diapriidae (Notton, 1994), Proctotrupidae (Choi et al, 2012; Lee et al., 1988; Lee et al., 2008). Proctorenyxidae Lelej & Kozlov, a very small family of Proctotrupoidea, contains only 2 genera with 2 species in the world: Hsiufuropronia chaoi Yang, 1997 from China; Proctorenyxa incredibilis (Kozlov) from Russian Far East. These are morphologically distinguished from other families of Proctotrupoidea families by the following combination of characteristics: antennal scape very short; vein Rs of fore wing not bifurcated apically; fore wing with pterostigma; gaster with narrow petiole; tergite 8 with two spiracles. And, the biology of this family is completely unknown. Here we report one unrecorded species, Proctorenyxa incredibilis (Kozlov, 1994), for the first time in Korea and provide photographs for the diagnostic characters.