part of overlaps has fasciculating neuron projection innervates develops from adult adult brain adult median bundle mb MBDL fly_anatomy.ontology FBbt:00003683 Prominent tract located in the anterior midline of the adult brain (Ito et al., 2014). It emerges as a paired tract from a broad area around the esophagus, merging into a single tract at the tip of the flange and terminates in the superior medial protocerebrum (Ito et al., 2014). It contains fibers from neurons of the pars intercerebralis and axons projecting to the SMP and the crepine (Ito et al., 2014). It is composed of axons of the BAmas1/2 lineages (Lovick et al., 2013). meB VAC1 VFB:FBbt_00003683 adult pars intercerebralis superior medial protocerebrum adult crepine larval median bundle median bundle adult FLAa3 lineage neuron adult FLAa2 lineage neuron