FIGURE 20 in Descriptions of four new sponge-inhabiting barnacles (Thoracica: Archaeobalanidae: Acastinae)

FIGURE 20. Acasta radenta sp. nov. Cirri I (A̅C), II (D, E) and III (F̅H) (Holotype). A, cirrus I, plumose setae on basal part enlarged in rectangle area; B, C, distal segments of anterior and posterior rami; D, Cirrus II, plumose and serrulate setae on protopod enlarged in rectangle area; E, distal segments of posterior ramus; F, cirrus III, serrulate and plumose setae on protopod; G terminal segment of anterior ramus; H, intermediate segments showing small ctenes on enlarged in rectangle area. Scale bars in µm.