ScerGAL4Gr59b.PD is expressed in gustatory neurons of 4 of the bitter-sensitive short labellar taste bristles.
ScerGAL4Gr59b.PD is expressed in some of the short bitter-sensitive sensilla of the labellum.
ScerGAL4Gr59b.PD is expressed in between 2 and 4 strongly staining cells of each labial palp.
Adult expression is weak and restricted to taste hairs in the labial palps.