part of overlaps larva larval nervous system esophageal foramen larval esophageal foramen 2021-09-10T07:59:34Z fly_anatomy.ontology VFB:FBbt_00051481 FBbt:00051481 Foramen of the larval central nervous system, through which the esophagus passes. It is found between the brain lobes, dorsal to the gnathal ganglion and part of the tritocerebrum (Hartenstein et al., 2018).