part of develops from antennal segment embryonic/larval cibarium embryonic/larval atrium FBbt:00001844 Posterior portion of the embryonic/larval pharynx, posterior to the atrium. Jurgens et al. (1986) define the larval cibarium as being the same as the pharynx, and posterior to the atrium. However, Campos-Ortega and Hartenstein (1985) define it as being the same as the atrium, and anterior to the pharynx. We follow the latter. mc140708. fly_anatomy.ontology larval cibarium FBbt:00005766 embryonic/larval pharynx dorsal ectoderm derivative cibarium primordium multicellular structure