FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term postorbital bristle ID (Ontology) FBbt:00004127 (Fly Anatomy)
Definition Small bristle of the adult postgena that is located immediately adjacent to the posterior of the eye (Haynie et al., 1986; Eichler et al., 2024). There are approximately 20 of these on each side, in a dorsoventral row (Eichler et al., 2024).[ FlyBase:FBrf0007734 FlyBase:FBrf0031004 FlyBase:FBrf0044923 FlyBase:FBrf0259346 ]
Also Known As"PoOr bristle" ; "postorbital seta"
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VFB:FBbt_00004127
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Data ClassFieldDirect annotations
Alleles (FBal)PHENOTYPE_MANIFEST_IN
Constructs (FBtp)PHENOTYPE_MANIFEST_IN
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 Alleles Images Constructs
 postorbital bristle (all annotations which use CV term, excluding "NOT" statements)
     postorbital bristle | heat sensitive
      --
     postorbital bristle | increased number
      --       --
     postorbital bristle | somatic clone
      --       --
Spanning Tree (Parents/Children)
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sclerite
 |__postgena____________
adult head capsule      |
 |__postgena____________|
chaeta                  |
 |__adult head bristle__|
mechanosensory chaeta   |
 |__microchaeta_________|
adult sensillum         |
 |__microchaeta_________|
adult head sensillum    |
 |__adult head bristle__|
                        postorbital bristle  11 rec.
                         |__dorsal postorbital bristle
                         |__ventral postorbital bristle
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Is a adult head bristle
microchaeta
Develops from presumptive postorbital bristle
Part of postgena
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Synonyms
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https://www.ento.csiro.au/biology/drosophila/melanogaster.html?postocular%20setulae
VFB:FBbt_00004127