Scer\GAL4Gr61a.4.9 drives expression in about 12 sugar-sensing chemosensory neurons in the prothoracic leg. A subset of the leg neurons project to the ventral nerve cord then ascend through the cervical connective to the posterior gnathal gangion.
Scer\GAL4Gr61a.4.9 drives expression in 1-2 gustatory receptor neurons associated with the taste pegs and 4 gustatory receptor neurons of the adult labral sense organ. All of the labellar neurons and many of the tarsal S cells send projections to the adult subesophageal zone.
Scer\GAL4Gr61a.4.9 is expressed in most of the long sugar-sensitive neuron of the taste sensilla of the labellum.