FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term crossvein ID (Ontology) FBbt:00004765 (Fly Anatomy)
Definition A short wing vein that runs anterior-posterior, joining two longitudinal wing veins (Stark et al., 1999). It lacks underlying tracheae and its formation requires a different set of genes to longitudinal veins (Stark et al., 1999).[ FlyBase:FBrf0107299 ]
Also Known As"cross-vein"
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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 Insertions Constructs
 crossvein (all annotations which use CV term, excluding "NOT" statements)
     crossvein | adult stage
      --
     crossvein | cell non-autonomous | ectopic
      --       --
     crossvein | cell non-autonomous | somatic clone
      --       --       --
     crossvein | decreased number | ectopic
      --       --
     crossvein | ectopic
      --
     crossvein | ectopic | somatic clone
      --
      --
     crossvein | heat sensitive
      --       --
     crossvein | increased number
      --       --
     crossvein | maternal effect
      --
      --
     crossvein | somatic clone
      --       --       --
Spanning Tree (Parents/Children)
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Vocabulary search 
wing blade________________
cuticular specialization__|
                          wing vein
                           |__crossvein  1332 rec.
                               |__anterior crossvein 587 rec.
                               |   |__campaniform sensillum of anterior crossvein 44 rec.
                               |__humeral crossvein 8 rec.
                               |   |__campaniform sensillum of dorsal humeral crossvein
                               |   |__campaniform sensillum of ventral humeral crossvein
                               |__posterior crossvein 610 rec.
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