FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term anterior pupal spiracle ID (Ontology) FBbt:00002997 (Fly Anatomy)
Definition The only functional spiracle of the pupa. These spiracles form as evaginations of the epithelium in the prothoracic segment, first apparent in the contracted third instar, just prior to pupariation. They are biperforate and open into the space between the pupa and the hardened puparium.[ FlyBase:FBrf0064787 ]
Also Known As"functional pupal spiracle"
CommentProthoracic segmental identity from Whitten, 1957 & 1980. Note that this is different from the segmental identity assignment of the anterior thoracic spiracle of the adult.
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Data ClassFieldDirect annotations
Alleles (FBal)PHENOTYPE_MANIFEST_IN
Insertions (FBti)PHENOTYPE_MANIFEST_IN
Constructs (FBtp)PHENOTYPE_MANIFEST_IN
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 Alleles Images Insertions Constructs
 anterior pupal spiracle (all annotations which use CV term, excluding "NOT" statements)
     anterior pupal spiracle | absent
      --       --
     anterior pupal spiracle | larval stage
      --       --
     anterior pupal spiracle | prepupal stage
      --       --
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pupal tracheal system
 |__pupal spiracle__________
spiracle                    |
 |__pupal spiracle__________|
dorsal ectoderm derivative  |
 |__tracheal metamere 1_____|
thoracic tracheal metamere  |
 |__tracheal metamere 1_____|
                            anterior pupal spiracle  84 rec.
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Is a pupal spiracle
Part of tracheal metamere 1
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Synonyms
  • "functional pupal spiracle" EXACT
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