develops from receives synaptic input in region sends synaptic output to region medulla layer M1 medulla layer M2 medulla layer M3 medulla layer M4 medulla layer M5 medulla layer M6 medulla layer M8 medulla layer M9 transmedullary Y neuron transmedullary Y neuron TmY5a TmY5a Transmedullary Y narrow field neuron that terminates with both fine and bleb-type arborizations in lobula layers 4, 5 and 6, and in lobula plate layer 3, but only has fine arborizations in lobula plate layer 1. It displays both fine and bleb-type arborizations in medulla layers M6 and M8, and has fine arborizations in medulla layers M2, M3, M4, M5 and M9 (Morante and Desplan, 2008; Fischbach and Dittrich (1989). It is glutamatergic (Davis et al., 2020). FBbt:00003823 FlyBrain_NDB:10174 fly_anatomy.ontology VFB:FBbt_00003823 TmY5a The identification of axons was done using a UAS-tau (P{UAS-tau-lacZ.O} - FBtp0010033) reporter (Morante and Desplan, 2008). The morphology of terminals was judged from figures in Fischbach and Dittrich (1989) as assessed by FlyBrain Neuron DB. lobula layer 4 lobula plate layer 1 lobula plate layer 3 narrow field transmedullary neuron lobula layer 5 lobula layer 6 Notch OFF hemilineage secondary neuron immature transmedullary Y neuron TmY5a adult glutamatergic neuron