Clones representing secondary lineages of SEZ. Panels (a–w) show z-projections of frontal confocal sections of adult brain labeled with anti-DN-cadherin (neuropil; magenta). Panels are constructed and are arranged as described in legend of Figure 8. Panels of two columns to the left (a–l) illustrate lineages with arborizations restricted to the posterior SEZ (a, b: 12LB; c, d: 6LB; e–g: 19LB; h–j: 12MX; k, l: 23LB). Panels of the third column (m–q) show lineage 5LB, which projects from the labium through the tritocerebrum to the superior protocerebrum. The right column depicts lineage 7MX, which links the SEZ with the SPG (r, s), and 0LB, with bilaterally symmetric projections in the SEZ and VLCi (t–w). Arrows in (f, i, l) point at DN-cadherin rich domain within ventromedial maxilla/labium that corresponds to central sensory endings of labial nerve (see accompanying paper by Kendroud et al., 2017). Arrows in (b, d) points at descending tracts formed by lineages 6LB and 12LB. For abbreviations, see List of Abbreviations. Bar: 50μm