Xenarcha (Xenarcha) effecta Belokobylskij & Ku 2025, comb. nov.

Xenarcha (Xenarcha) effecta (Papp, 1972) comb. nov. Exothecus effectus Papp, 1972: 323. Colastes effectus: Shenefelt 1975: 1119. Xenarcha effecta: van Achterberg 1983: 349. Colastes (Shawiana) effectus: Belokobylskij 1990: 37; 1994: 71. Colastes (Xenarcha) effectus: Belokobylskij 1998: 154; Ku et al. 2001: 154. Colastes (Fungivenator) effectus: van Achterberg and Shaw 2008: 1854; Yu et al. 2016; Belokobylskij et al. 2019: 281. Material examined. South Korea: [GN] • Jinju, Gajwa, 28.IX.1993 (Deokseo Ku), 1 female (SMNE); • Sancheong-gun, Chahwang-myeon, Mt. Hwangmae, (30 km NNW Jinju, forest, h = 800 m), 16.VI.2002 (S. Belokobylskij), 1 female (ZISP). [GB] • Yeongcheon-si, Hyeonseo-myeon, Galjeon-ri, Mt. Bohyeon, sweeping, 4.IX.1998 (Jungsuk Park), 1 female (SMNE). Hosts. Unknown. Distribution. Korean peninsula; Russia (European part, southern Far East), China, Japan. Remarks. This species was included in the subgenus Fungivenator van Achterberg & Shaw, 2008 of the genus Colastes Haliday (van Achterberg and Shaw 2008). However the material of our study from China, Korea, and the Russian Far East distinctly shows that the members of this species have a distinct and deep round pronope, which together with some other characters (complete notauli, radial vein (r) of the fore wing arising almost from middle of pterostigma) demonstrate that it belongs to Xenarcha (subgenus Xenarcha).