chemosensory ventral triple row bristle Palka et al. (1979) show that of the five dendrites innervating the wing margin chemosensory bristles, one contains a microtubular body, suggesting it to be a mechanosensory neuron. That this bristle is chemosensory in nature is based on the presence of the terminal pore and multiple innervation with dendrites extending to the pore (Palka et al., 1979). vTR Multiply innervated, recurved chemosensory bristle of the ventral row of triple row wing sensilla (Hartenstein and Posakony, 1989). ventral triple row chemosensory bristle recurved, poly-innervated, chemosensory bristle fly_anatomy.ontology VFB:FBbt_00004335 FBbt:00004335 mechanosensory chaeta wing margin taste bristle ventral triple row bristle