Figure 9.

Summary diagram illustrating that tangential neurons shown in Figures 3–6 occupy distinctive protocerebral domains. Each arborization occupies a broad lateral expanse within one or more protocerebral lobes, but extends through only 15–45 µm through the depth of its domain. Superimposed domains (Figs. 5D+6D, 6D+6E) further demonstrate that the protocerebrum is composed of distinct but partially overlapping territories. Unoccupied volumes in the SIP suggest that there are likely more neurons that are as yet unidentified at this level of the brain.