FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term interommatidial bristle ID (Ontology) FBbt:00004133 (Fly Anatomy)
Definition Small mechanosensory hair found between ommatidia of the adult eye (Ready et al., 1976). There are around 600-650 of these per eye (Eichler et al., 2024) and they are usually found at the anterior ends of each of the two horizontal faces of each (hexagonal) ommatidium (Ready et al., 1976). Their placement is less regular towards the anterior region of the eye and they are not usually found around the edges of the eye (Ready et al., 1976).[ FlyBase:FBrf0028544 FlyBase:FBrf0064798 FlyBase:FBrf0259346 ]
Also Known As "eye bristle" ; "InOm bristle" ; "interfacetal bristle"
Comment
Links to External Ontologies
VFB:FBbt_00004133
Annotations
Records annotated with this term OR any of its CHILD TERMS
Records annotated with this exact term (annotations to child terms are NOT included)
Data Class Field Records
Alleles (FBal)  PHENOTYPE_MANIFEST_IN     642
Insertions (FBti)  EXPRESSION_STAGE_TISSUE_POSITION       3
Insertions (FBti)  PHENOTYPE_MANIFEST_IN      69
Constructs (FBtp)  PHENOTYPE_MANIFEST_IN     403
show Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records
 Full annotation statements 
Relevant FlyBase reports
 Alleles Genes Images Insertions Constructs
 interommatidial bristle (all annotations which use CV term, excluding "NOT" statements)     642      9      2     71    403
     interommatidial bristle | absent       3       --       --       2      1
     interommatidial bristle | absent | adult stage       4       --       --       --       4
     interommatidial bristle | adult stage      24       --       --       --      25
     interommatidial bristle | adult stage | decreased number       2       --       --       --       2
     interommatidial bristle | adult stage | ectopic       2       --       --       --       4
     interommatidial bristle | adult stage | increased number       2       --       --       --       4
     interommatidial bristle | adult stage | somatic clone       3       --       --       --       --
     interommatidial bristle | chemical conditional       1       --       --       --       1
     interommatidial bristle | clone of cells       1       --       --       --       --
     interommatidial bristle | cold sensitive       1       --       --       --       1
     interommatidial bristle | decreased number       5       --       --       1      4
     interommatidial bristle | ectopic      32       --       --       1     24
     interommatidial bristle | ectopic | pupal stage       2       --       --       --       4
     interommatidial bristle | ectopic | somatic clone       4       --       --       2       --
     interommatidial bristle | female limited       2       --       --       --       4
     interommatidial bristle | heat sensitive      18       --       --       1     14
     interommatidial bristle | increased number      37       --       --       --      27
     interommatidial bristle | increased number | drug conditional       2       --       --       --       4
     interommatidial bristle | increased number | heat sensitive       2       --       --       --       3
     interommatidial bristle | maternal effect       1       --       --       --       --
     interommatidial bristle | P-stage      11       --       --       --       9
     interommatidial bristle | pharate adult stage       4       --       --       2       --
     interommatidial bristle | pharate adult stage | increased number       1       --       --       --       --
     interommatidial bristle | pharate adult stage | somatic clone       1       --       --       --       --
     interommatidial bristle | posterior       2       --       --       --       2
     interommatidial bristle | progressive       9       --       --       --      11
     interommatidial bristle | pupal stage       8       --       --       1      3
     interommatidial bristle | pupal stage P6       2       --       --       --       4
     interommatidial bristle | pupal stage P7       3       --       --       --       3
     interommatidial bristle | pupal stage P7 | heat sensitive       1       --       --       --       --
     interommatidial bristle | pupal stage P7 | somatic clone       1       --       --       --       --
     interommatidial bristle | pupal stage | increased number       2       --       --       --       4
     interommatidial bristle | pupal stage | somatic clone       1       --       --       1       --
     interommatidial bristle | pupal stage | somatic clone | increased number       2       --       --       --       --
     interommatidial bristle | somatic clone      53       --       --      10      8
     interommatidial bristle | somatic clone | heat sensitive       1       --       --       --       --
     interommatidial bristle | somatic clone | increased number       7       --       --       --       --
     interommatidial bristle | temperature conditional       7       --       --       1      8
Spanning Tree (Parents/Children)
Only view relationship:
chaeta
 |__adult head bristle__
mechanosensory chaeta   |
 |__microchaeta_________|
adult sensillum         |
 |__microchaeta_________|
adult head sensillum    |
 |__adult head bristle__|
                        interommatidial bristle  1127 rec.
Spanning Tree View Settings
Parents/Children
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Is a adult head bristle
microchaeta
Part of eye
hide Synonyms & Secondary IDs
Synonyms
Secondary IDs
hide External Crossreferences & Linkouts
VFB:FBbt_00004133