part of embryonic/larval prothoracic sensillum prothoracic ventral Kolbchen vbd FBbt:00002739 vk fly_anatomy.ontology prothoracic ventral black dot sensillum sh B VFB:FBbt_00002739 Any Kolbchen (FBbt:00005199) that is part of some larval prothoracic ventral' sensory cluster (FBbt:00052124). Kolbchen larval prothoracic ventral' sensory cluster