Leptothorax (Goniothorax) umbratilis Wheeler, 1921f: 160 (w.q.) GUYANA. Neotropic.

Primary type information: Type-material: syntype workers (number not stated, “several”), 1 syntype queen. Type-locality: Guyana (“British Guiana”): nr Bartica, Penal Settlement, 10.viii.1920, in Tachigalia (W.M. Wheeler). Type-depositories: MCZC, MZSP.