octopaminergic VUMd4 neuron obsolete descending neuron of the gnathal ganglion DNg66 2024-02-05T12:00:00Z true FBbt:20007508 Obsoleted, as mapped to OA-VUMd4 in Bates et al. (2025) - doi:10.1101/2025.07.31.667571. Type identified at light level and matched across EM datasets by Sturner et al. (2025). Pre- or post-synapse locations are the fewest regions that collectively contain at least 80 percent of all pre- or post-synapses of these neurons in FlyWire. fly_anatomy.ontology Adult descending neuron with its soma posterior-ventral to the gnathal ganglion (Schlegel et al., 2024; Dorkenwald et al., 2024). In the brain, it has postsynapses and presynapses in the saddle, the gnathal ganglion and the flange, and also has postsynapses in the cantle (Schlegel et al., 2024; Dorkenwald et al., 2024). In the VNC, it follows the median dorsal abdominal tract (Sturner et al., 2025). Its predicted neurotransmitter is acetylcholine (Eckstein et al., 2024). There are approximately 1-2 of these cells per organism (Schlegel et al., 2024; Dorkenwald et al., 2024; Sturner et al., 2025). DNad002