part of develops from clypeo-labral disc adult head bristle pharyngeal sense organ cibarial fish-trap bristle posterior cibarial setae Sensory bristle on the anterior plate of the cibarium of the adult pharynx, near the ventral cibarial sense organ (VCSO). These bristles project upwardly and are arranged in two rows, dorsal and ventral to the VCSO. There are 18 to 23 bristles, each innervated by a mechanosensory neuron. cibarial fishtrap bristle cibarial fish trap bristle fly_anatomy.ontology FBbt:00004136 VFB:FBbt_00004136 satellite bristles filter apparatus of McAlpine adult cibarium anterior ectoderm derivative ventral ectoderm derivative