part of embryonic head larval head larval digestive system cephalopharyngeal skeleton fly_anatomy.ontology cephalo-pharyngeal skeleton larval head skeleton A group of connected sclerites of the anterior embryonic/larval digestive system (atrium, pharynx and dorsal pouch). The cibarial dilator muscles connect to the cephalopharyngeal skeleton to lift the roof of the pharynx and thereby widen its lumen (Jurgens, 1986). FBbt:00001845 UBERON:6001845 CPS mouth parts cuticular specialization