part of develops from primordium ellipsoid body primordium posterior ellipsoid body primordium 2021-08-18T08:00:57Z FBbt:00051445 fly_anatomy.ontology VFB:FBbt_00051445 prEBp Posterior part of the primordium of the ellipsoid body in the larval brain (Lovick et al., 2017). It is formed by dense, anteriorly directed filopodial tufts emerging from the dense posterior plexus of the fan-shaped body primordium (Lovick et al., 2017). It separates from the fan-shaped body primordium during metamorphosis and merges with the anterior part of the ellipsoid body primordium (Lovick et al., 2017). embryonic/larval fan-shaped body - primordial