Fig. 19 in Four new sponge-inhabiting barnacles of the genus Acasta (Thoracica: Archaeobalanidae: Acastinae) from the Indo-Pacific

Fig. 19. Acasta clausa sp. nov., mouth parts (SEM, paratype, from Taiwan). A, Labrum and mandibular palps; B, Ctenoid scales at base of mandibular palp; C, Upper half of mandibular palp; D, Enlarged crests of labrum (denticles indicated by arrows); E, Mandible; F, Biserrate setae on lateral surface of mandible; G, H, Maxillules; I, Lower margin of maxillule. Abbreviations: mdp = mandibular palp. Scale bars in µm.