Stage 12

P1, P2l, P2m, P3l, P3m, P4l: fiber tract founder clusters of the protocerebrum

D/T: fiber tract founder cluster at the deutero- and tritocerebrum

ol: optic lobe

fg: frontal ganglion

LPT: lateral protocerebral tract

VCT: ventral commisural tract

aCC/pCC: Anterior-Posterior corner cell cluster (in maxillary segment)

DCT: dorsal commissural tract(s)