Enterographa ducouretiana is described as new to science from New Caledonia. It is characterized by a foliicolous habit, ascomata immersed in a pseudostroma, a dark purple hypothecium, and (3–)5-septate ascospores of (16–)20.5(–24) × (2.5–)2.9(–3.5) µm with a distinct gelatinous sheath of 1.5(–2) μm. Key words: Arthoniales, Australasia, Lichen, Taxonomy.