Rhopalum coarctatum coarctatum (Scopoli 1763)

Sphex coarctata Scopoli, 1763: 293 . Carniola (now part of Slovenia): no specific locality (holotype or syntype: no sex stated).

Rhopalum coarctatum race coarctatum Tsuneki, 1955: 126 . Europe.

Rhopalum (Corynopus) coarctatum Marshakov, 1976 d: 109 . Haneda, 2008: 5, 6. Takahashi, Haneda & Tano, 2009: 50. Japan.

Crabro (Rhopalum) nipponicus Kohl, 1915: 342 .

Rhopalum (Rhopalum) nipponicum Tsuneki, 1952: 113, 114, 123. Tsuneki, 1955: 126; 1960b: 49; 1960c: 58, 61. Haneda, 1960: 31.

Rhopalum (Rhopalum) nipponicum hokkaidense Tsuneki, 1952: 113, 114, 123. Tsuneki, 1960c: 58, 61. Japan.

Distribution: Nearctic, Oriental and Palearctic regions.