directly develops from larval EW neuron EW2 neuron FBbt:00001584 fly_anatomy.ontology Serotonergic interneuron of embryonic/larval abdominal segments A1-A7. Its contralateral branch forms a complex pattern at the ventral border of the contralateral neuropil that extends along the lateral margins. Its ipsilateral branch seems to fasciculate with the respective neurite of the serotonergic abdominal medial neuron and follows a similar pathway, though extending a contralateral neurite about mid-level in the dorso-ventral and anterior-posterior axis. This neurite extends a short way anterior along a midline tract. It is born from the second-born ganglion mother cell of the 7-3 lineage (GMC 7-3b). VFB:FBbt_00001584 larval serotonergic abdominal lateral neuron ganglion mother cell GMC7-3b larval serotonergic abdominal neuron