Type species. Millepora aspera Linnaeus, 1767, by monotypy
Included species. Errina adornata Cairns; E. altispina Cairns; E. antarctica (Gray); E. argentina Bernal, Cairns, & Lauretta; E. aspera (Linnaeus); E. atlantica Hickson; E. australis Cairns & Zibrowius; E. bicolor Cairns; E. boschmai Cairns; E. capensis Hickson; E. chathamensis Cairns; E. cheilopora Cairns; E. cochleata Pourtalès; E. cooki Hickson; E. cyclopora Cairns; E. dabneyi (Pourtalès); E. dendyi Hickson; E. fissurata Gray; E. gracilis von Marenzeller; E. japonica Eguchi; E. kerguelensis Broch; E. labrosa Pica, Cairns & Puce; E. laevigata Cairns; E. laterorifa Eguchi; E. macrogastra Marenzeller; E. novaezelandiae Hickson; E. reticulata Cairns; E. sinuosa Cairns
Distribution. North Atlantic, SWA off Mar del Plata, Mediterranean Sea, Galápagos Islands, South Africa, Antarctic and Subantarctic regions, New Zealand, New Caledonia, southwest Indian Ocean, Japan, and Tristan da Cunha Archipelago, 15–1772 m (see Bernal et al. 2019, Cairns 2015 and Pica et al. 2015).
Diagnosis. See Cairns 2015.