Image acquired with permission from the Oxford University Museum of Natural History, United Kingdom. Specimen collected by Wallace. Specimen locality: Singapore Label transcription: [TYPE HYME 2282 Pompilus (Priocnemis) optimus Smith, 1858 HOLOTYPE ♀ HOPE ENT COLL. OUMNH] [r.Wahis dt. 77 HOLOTYPE ♀ Pompilus (Priocnemis) optimus SMITH 1858 -Auplopus ♀ sagedae D.TORRE 1897] [Priocnemis optimus Smith.] [SING.] [Holo TYPE Wahis 1164]