Cephalotes opacus

Distribution
This taxon was described from Guyana.

Nomenclature

 *  opacus. Cephalotes opacus Santschi, 1920f: 147 (w.) GUYANA. De Andrade & Baroni Urbani, 1999: 149 (q.m.). Combination in Eucryptocerus: Kempf, 1951: 131; in Cephalotes: De Andrade & Baroni Urbani, 1999: 147. Junior synonym of placidus: Kempf, 1959a: 92. Revived from synonymy and senior synonym of abdominalis: De Andrade & Baroni Urbani, 1999: 147.
 * abdominalis. Cephalotes abdominalis Santschi, 1929d: 302 (w.) FRENCH GUIANA. Combination in Eucryptocerus: Kempf, 1951: 129. Junior synonym of opacus: De Andrade & Baroni Urbani, 1999: 147.