FB2026_03 , released September 17, 2026
FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term third segment of antenna ID (Ontology) FBbt:00004515 (Fly Anatomy)
Definition Largest segment of the antenna. It is bulbous, light grey in color and it bears numerous hairs and sensilla, including trichoid, basiconic, intermediate and coeloconic sensilla. It has an articulated joint with the second segment of the antenna. It contains the sacculus.[ FlyBase:FBrf0007734 FlyBase:FBrf0031004 ]
Also Known As "antennal segment 3" ; "funiculus"
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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)EXPRESSION_STAGE_TISSUE_POSITION
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
 third segment of antenna (all annotations which use CV term, excluding "NOT" statements)
     third segment of antenna | adult stage
      --       --       --       --
     third segment of antenna | cell autonomous | ectopic | somatic clone
      --       --       --       --
     third segment of antenna | cold sensitive
      --       --       --       --
     third segment of antenna | distal
      --       --       --
     third segment of antenna | distal | somatic clone
      --       --       --       --
     third segment of antenna | ectopic
      --       --       --
     third segment of antenna | ectopic | somatic clone
      --       --       --       --
     third segment of antenna | increased number
      --       --       --       --
     third segment of antenna | pharate adult stage
      --       --       --       --
     third segment of antenna | pupal stage
      --       --       --       --
     third segment of antenna | somatic clone
      --       --       --       --
     third segment of antenna | somatic clone - tissue specific
      --       --       --       --
     third segment of antenna | temperature conditional
      --       --       --
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antenna____________
appendage segment__|
                   segment of antenna
                    |__third segment of antenna  536 rec.
                        |__antennal segment 3 sense organ 258 rec.
                            |__antennal segment 3 thermosensory organ
                            |__basiconic sensillum of antennal segment 3(+) 131 rec.
                            |__chamber I of sacculus(+) 4 rec.
                            |__chamber II of sacculus(+) 8 rec.
                            |__chamber III of sacculus(+) 1 rec.
                            |__coeloconic sensillum of antennal segment 3(+) 51 rec.
                            |__dorsal compartment of chamber III of sacculus(+)
                            |__intermediate sensillum of antennal segment 3(+) 24 rec.
                            |__sacculus(+) 35 rec.
                            |__sensillum of sacculus(+) 6 rec.
                            |__trichoid sensillum of antennal segment 3(+) 94 rec.
                            |__ventral compartment of chamber III of sacculus(+)
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Is a segment of antenna
Develops from presumptive third segment of antenna
Part of
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Secondary IDs
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https://www.ento.csiro.au/biology/drosophila/melanogaster.html?flagellomere%201