FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term vertical bristle ID (Ontology) FBbt:00004121 (Fly Anatomy)
Definition Bristle of the posterior dorsal head, close to the eye (Eichler et al., 2024). There are usually four of these on each side, two larger and two smaller (Eichler et al., 2024).[ FlyBase:FBrf0007734 FlyBase:FBrf0031004 FlyBase:FBrf0259346 ]
Also Known As "vertical seta" ; "Vt bristle"
Comment Previously only comprised the two large vertical bristles, but two additional smaller bristles identified by Eichler et al. (2024).
Links to External Ontologies
VFB:FBbt_00004121
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      13
Insertions (FBti)  PHENOTYPE_MANIFEST_IN       1
Constructs (FBtp)  PHENOTYPE_MANIFEST_IN       2
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 Images Insertions Constructs
 vertical bristle (all annotations which use CV term, excluding "NOT" statements)      13      4      1      2
     vertical bristle | pharate adult stage | increased number       2       --       --       --
     vertical bristle | somatic clone - Minute background | increased number       1       --       --       --
Spanning Tree (Parents/Children)
Only view relationship:
chaeta
 |__adult head bristle__
mechanosensory chaeta   |
 |__macrochaeta_________|
adult head sensillum    |
 |__adult head bristle__|
                        vertical bristle  60 rec.
                         |__vertical bristle 1 25 rec.
                         |__vertical bristle 2 35 rec.
                         |__vertical bristle 3
                         |__vertical bristle 4
Spanning Tree View Settings
Parents/Children
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Is a adult head bristle
macrochaeta
Develops from presumptive vertical bristle
Part of vertex
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Synonyms
Secondary IDs
hide External Crossreferences & Linkouts
https://www.ento.csiro.au/biology/drosophila/melanogaster.html?vertical%20setae
VFB:FBbt_00004121