transverse antennal lobe tract 4 projection neuron 1 [FBbt_00047720]

transverse antennal lobe tract 4 projection neuron 1

ID: FBbt_00047720

Multiglomerular antennal lobe (AL) projection neuron that is the only type of AL projection neuron with its cell body in the posterior rind of the brain, in a cluster of 5 or 6 cells in the area ventral to the mushroom body calyx (Tanaka et al., 2012). Only two cells of this cluster enter the AL (Bates et al., 2020). Long cell body fibers traverse the brain to enter the ventral AL from its posterior side (Tanaka et al., 2012). These neurons are panglomerular and follow transverse antennal lobe tracts (Bates et al., 2020). They collectively innervate the posterior lateral protocerebrum and lateral horn and a collateral branch reaches the ring neuropil via the posterior lateral fascicle (Tanaka et al., 2012).

The two spPNs follow different transverse antennal lobe tracts according to Scheffer et al. (2020) and Bates et al. (2020). Tanaka et al. (2012) state that these are unilateral, but arborization of a medially-directed branch was not determined, so this was probably missed. One subtype crosses the midline based on hemibrain 1.2 skeletons.