Plagiognathus amurensis Reuter, 1883e: 454, 513. LT (Kerzhner, 1997d: 116): female, Russia (FE), Amuria; MZHF.
Plagiognathus nigricornis Hsiao in Hsiao & Meng, 1963: 441, 447, 449 (syn. H.Y. Li & Zheng, 1991: 89, 92). HT: male, China (NO), Tientsin [= Tianjin]; IZAS.