Fig. 7

General morphology of jaw components in Histriobdella homari. SEM images. All jaws are shown in dorsal view, except for (D) and (F), which are shown ventrally. a. Juvenile jaw apparatus with the main components. b. Adult jaw apparatus. c. Detailed view of the adult maxillae. d. Anterior end of the adult mandibles. e. Anterior part of the juvenile jaw apparatus. f. Anterior half of the juvenile jaw apparatus. dr, dorsal rod; md, mandible; mxI – mxIV, maxillary plates I – IV; sh, mandibular shaft; vc, ventral carriers