FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term Kolbchen ID (Ontology) FBbt:00005199 (Fly Anatomy)
Definition Club-like sensory structure found in the thoracic segments of the embryo/larva.[ FlyBase:FBrf0041814 FlyBase:FBrf0045359 ]
CommentDambly-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'.
Links to External Ontologies
VFB:FBbt_00005199
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Direct annotations: records annotated with this exact term (child terms are NOT included)
Data ClassFieldDirect annotations
Alleles (FBal)PHENOTYPE_MANIFEST_IN
Insertions (FBti)PHENOTYPE_MANIFEST_IN
Constructs (FBtp)PHENOTYPE_MANIFEST_IN
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 Full annotation statements 
Relevant FlyBase reports
 Alleles Genes Images Insertions Constructs
 Kolbchen (all annotations which use CV term, excluding "NOT" statements)
     Kolbchen | ectopic | heat sensitive
      --       --       --
     Kolbchen | embryonic stage
      --       --       --
     Kolbchen | germline clone
      --       --       --       --
Spanning Tree (Parents/Children)
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Vocabulary search 
larval thorax
 |__embryonic/larval thoracic sensillum__
external sensillum                       |
 |__eo-type sensillum____________________|
larval sensillum                         |
 |__embryonic/larval thoracic sensillum__|
                                         Kolbchen  65 rec.
                                          |__lateral Kolbchen lbd 8 rec.
                                          |   |__mesothoracic lateral Kolbchen lbd 4 rec.
                                          |   |__metathoracic lateral Kolbchen lbd 3 rec.
                                          |__mesothoracic ventral Kolbchen vbd 3 rec.
                                          |__metathoracic ventral Kolbchen vbd 2 rec.
                                          |__prothoracic dorsal Kolbchen dbd
                                          |__prothoracic ventral Kolbchen vbd 3 rec.
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Is a eo-type sensillum
embryonic/larval thoracic sensillum
Part of
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VFB:FBbt_00005199