part of continuous with adult anterior dorsal mesothoracic nerve wing nerve radial vein combined L1-L3 nerve 2020-06-30T14:19:18Z Nerve bundle running through the radial vein of the wing, parallel to the costal nerve of the proximal wing margin (Murray et al., 1984). It feeds into the anterior dorsal mesothoracic nerve proximally and splits into the marginal (L1) and L3 nerves distally (Murray et al., 1984). fly_anatomy.ontology VFB:FBbt_00049637 FBbt:00049637 marginal nerve L3 nerve