Membranobalanus porphyrophilus sp. nov. opercular plates A–H holotype (WAM C66803) I–L paratype (SAMA C12708). A Left scutum, external view B left scutum, internal view C right scutum, external view D right scutum, internal view E left tergum, external view F left tergum, internal view G right tergum, external view H right tergum, internal view I left scutum, external view J left scutum, internal view K left tergum, external view L left tergum, internal view. Scale bars: 2 mm.