Expression of Gr43aScer\UAS.cFa in the ab1C neuron under the control of Scer\GAL4Gr63a.PF and Scer\GAL4Gr21a.9.323 confers robust responses to fructose, glucose, maltose, sucrose, maltotriose and glycerol, but not trehalose, melezitose, and m-glucoside.