Robber Fly

Found perched upon a White Thorn Acacia. Remarkable coloration. Perhaps the "Green Eyed Robber Fly" or "Hanging Thief Robber Fly"? I noticed on several other photos of the robber flies the black markings on the abdomen are on the higher up on the dorsal but in this specimen the darker markings hang lower on the abdomen. So I remain uncertain as to which species of 'Diogmites' this specimen is.