part of overlaps has fasciculating neuron projection innervates develops from adult adult posterior lateral fascicle An arch-like bundle of neuronal fibers in the adult brain connecting the posterior lateral protocerebrum (PLP) and the superior intermediate protocerebrum (SIP) (Ito et al., 2014). It demarcates the boundary between the superior clamp and lateral horn/superior lateral protocerebrum (SLP) (Ito et al., 2014). The posterior lateral fascicle makes a steep curve near the anterior medial edge of the lateral horn (LH), where it narrowly intersects the trajectories of the mALT, mlALT and lALT. It can be divided into four components, dorsolateral, dorsomedial, ventral and external, based on lineage (DPLpv, CP2/3, BLVp1/2 and BLP1/2, respectively) (Lovick et al., 2013). p l fasc fly_anatomy.ontology PLF Some of the olfactory projection neurons send collateral branches to the PLP via the lateral section of the posterior lateral fascicle, and to the SIP via the superior section of the posterior lateral fascicle (Tanaka et al., 2012). From Strausfeld pg 99 in Musca Domestica (FBrf0239233, FBrf0239234). Confirmed as present in Drosophila melanogaster by VH. VFB:FBbt_00007083 FBbt:00007083 adult protocerebrum posterior lateral protocerebrum superior intermediate protocerebrum posterior lateral fascicle larval posterior lateral fascicle adult VLPl&p1 lineage neuron adult DL2 lineage neuron adult VLPp&l1 lineage neuron adult VLPl&p2 lineage neuron adult DL1 lineage neuron adult VLPp1 lineage neuron BLP1 lineage neuron