Canthon semiopacus Harold, 1868
Canthon semiopacus Harold, 1868a: 57 (original description). Type locality: French Guiana and Brazil. Name-bearing type: two known syntypes (MFNB and ZSM), examined by FZVM.
Geocanthon semiopacus – Pereira & Martínez 1956a: 170 (revision, new combination). — Vulcano & Pereira 1964: 673 (catalogue).
Distribution
Supposedly Colombia, Venezuela, French Guiana, Brazil, Ecuador, and Bolivia (Schoolmeesters 2023).
Literature record
Pereira & Martínez 1956b: 170 (Venezuela). — Vulcano & Pereira 1964: 673 (Venezuela).