FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term metatarsus ID (Ontology) FBbt:00004648 (Fly Anatomy)
Definition The first of the tarsal segments of the adult leg. It is located between the tibia and the second tarsal segment and is longer than the other tarsal segments. It has 8 longitudinal rows of bristles around the circumference.[ FlyBase:FBim0000836 FlyBase:FBrf0007734 FlyBase:FBrf0012178 FlyBase:FBrf0111704 ]
Also Known As "1st tarsal segment" ; "basitarsus" ; "first segment of the tarsus" (for all, see Synonyms field below)
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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      68
Insertions (FBti)  EXPRESSION_STAGE_TISSUE_POSITION       5
Insertions (FBti)  PHENOTYPE_MANIFEST_IN       8
Constructs (FBtp)  PHENOTYPE_MANIFEST_IN      25
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
 metatarsus (all annotations which use CV term, excluding "NOT" statements)      68      7      3     13     26
     metatarsus | cell non-autonomous | somatic clone       2       --       --       --       2
     metatarsus | distal       1       --       --       --       --
     metatarsus | ectopic      12       --       --       1     10
     metatarsus | ectopic | somatic clone       1       --       --       1       --
     metatarsus | heat sensitive       2       --       --       --       --
     metatarsus | proximal | somatic clone       1       --       --       --       --
     metatarsus | somatic clone       4       --       --       --       --
Spanning Tree (Parents/Children)
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  segment of leg
   |__tarsal segment
       |__metatarsus  620 rec.
           |__mesothoracic metatarsus 18 rec.
           |__metathoracic metatarsus 30 rec.
           |__prothoracic metatarsus 512 rec.
               |__metatarsus of female prothoracic leg
               |__metatarsus of male prothoracic leg 499 rec.
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Is a tarsal segment
Develops from presumptive metatarsus
Part of
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Synonyms
  • "1st tarsal segment" EXACT
    "basitarsus" EXACT[ FlyBase:FBrf0111704 ]
    "first segment of the tarsus" EXACT
    "first tarsal segment" EXACT
    "tarsal segment 1" EXACT
Secondary IDs
hide External Crossreferences & Linkouts
https://www.ento.csiro.au/biology/drosophila/melanogaster.html?basitarsi
UBERON:6004648