part of develops from ventrolateral protocerebrum Currently some uncertainty about whether this is truly protocerebral - may actually be part of deutocerebrum (Strausfeld has characterized it as such). This should be clarified as a result of Volker Hartenstein's lineage mapping work. The VLP corresponds to almost all of the vlpr of Otsuna and Ito (2006) and to the ventrolateral protocerebrum (VLP) and optic glomerulus (OG) of Chiang et al. (2011) (Ito et al., 2014). vlpr FBbt:00007058 VFB:FBbt_00007058 VLP anterior optic foci ventro-lateral adult protocerebrum fly_anatomy.ontology ventro-lateral protocerebrum OG A large mass of synaptic neuropil domains in the anterior brain of the adult, between the antennal lobe and the optic lobe (Ito et al., 2014). It can be divided into an anterior and posterior regions (AVLP and PVLP) (Ito et al., 2014). embryonic/larval ventrolateral protocerebrum synaptic neuropil block ventrolateral neuropils