ScerGAL4Gr22a.4.2 drives expression in one gustatory receptor neuron of the larval terminal organ. This neuron also expresses ScerGAL4Gr33a.4.7, ScerGAL4Gr66a.1.8, ScerGAL4Gr32a.3.7.PW, ScerGAL4Gr39a.a.3.4, ScerGAL4Gr39a.b.1, ScerGAL4Gr59d.4.1, ScerGAL4Gr9a.6.3, ScerGAL4Gr22e.2.5, ScerGAL4Gr28b.a.3, ScerGAL4Gr28b.e.4.245, ScerGAL4Gr36b.0.9, ScerGAL4Gr36c.2.5, ScerGAL4Gr58b.1, ScerGAL4Gr59a.1.5, ScerGAL4Gr59c.5.5 and ScerGAL4Gr93b.5.3.