protocerebral neuroblast neuroblast BLAl2 neuroblast VPNl&d1 neuroblast BLAvm2 fly_anatomy.ontology FBbt:00050012 VFB:FBbt_00050012 BLAvm2 and BLAl2 not in Pereanu and Hartenstein (2006) or later (but pre-connectome) Hartenstein papers. Hemilineage classes not created for this NB as three groups were identified in Schlegel et al. (2024) and it is unclear how hemilineages should be grouped. Neuroblast whose lineage consists of two clusters of cells in the adult (Ito et al., 2013). A smaller, dorsal group collectively innervates the lateral horn and superior lateral protocerebrum (Ito et al., 2013). A larger, lateral group innervates the optic lobe and projects contralaterally via the posterior optic commissure (Ito et al., 2013). neuroblast VPNl_d1 neuroblast BLAl2 type I neuroblast neuroblast BLA