Type notes:
Material included: 15 workers Angola: Rio Mbalé, 120 km. S Vila da Ponte, ix.1928 (A. Monard), 1 worker Angola: Rio Tumbolé, ca 40 km. E Vila da Ponte, i.1929 (A. Monard); 16 minor workers, deposited in NHMB (no type status).
As unavailable (infrasubspecific) name: Santschi, 1937d: 219.
Declared as unavailable (infrasubspecific) name: Bolton, 1995b: 325.