Engramma zimmeri r. okiavoensis Forel, 1916: 431 (w.) DEMOCRATIC REPUBLIC OF THE CONGO. Afrotropic.

Primary type information: Primary type material: syntype workers (number not stated). Primary type locality: Democratic Republic of the Congo (“Congo”): Okiavo River, nr St Gabriel (H. Kohl). Primary type depositories: MHNG, NHMB. Primary type specimen: CASENT0909759. Type notes: 1) Baroni Urbani, 1977e: 85, cites 1 worker syntype in NHMB. 2) Shattuck, 1994: 169, cites 4 worker syntypes in MHNG.