Uncopolynoe corallicola is a short-bodied scale worm with 40–45 segments and 12 pairs of elytra. The prostomium is weakly bilobed anteriorly and lacks cephalic peaks. The lateral antennae lack basal ceratophores and arise directly from the anterior margin of the prostomium. The median antenna has a ceratophore which is located between and slightly beneath the lateral antennae. Notopodia are absent and neuropodia are inconspicuous after segment 4. Notochaetae are absent, but there are three types of neurochaetae: stout curvedhooks, curved club-shaped forms and bidentate chaetae.