Kolbchen VFB:FBbt_00005199 Dambly-Chaudiere and Ghysen (1986) argue that since the Kolbchen is not black (except when viewed with phase contrast) and is more than a pit, the original name of Kolbchen (meaning 'small club') is preferable to 'pit' or 'black dot'. black dot FBbt:00005199 pit Club-like sensory structure found in the thoracic segments of the embryo/larva. black organ B fly_anatomy.ontology Kolbchen, k ventral pit eo-type sensillum embryonic/larval thoracic sensillum