FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term prothoracic episternum ID (Ontology) FBbt:00004566 (Fly Anatomy)
Definition A sclerite, lacking bristles, that is located anterior to the epimerom and adjacent to the prothoracic coxa and sternum. It develops from the prothoracic leg disc.[ FlyBase:FBrf0007734 FlyBase:FBrf0219028 ]
Also Known As "proepisternum" ; "propleurum"
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Records annotated with this term OR any of its CHILD TERMS
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Data Class Field Records
Alleles (FBal)  PHENOTYPE_MANIFEST_IN       1
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 prothoracic episternum (all annotations which use CV term, excluding "NOT" statements)       1      6
Spanning Tree (Parents/Children)
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sclerite
 |__episternum____________________
pleurum                           |
 |__episternum____________________|
 |__prothoracic pleurum___________|
adult ventral external prothorax  |
 |__prothoracic pleurum___________|
ectodermal derivative             |
 |__ventral ectoderm derivative___|
                                  prothoracic episternum  8 rec.
                                   |__prothoracic preepisternum 1 rec.
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Is a episternum
ventral ectoderm derivative
Develops from prothoracic leg disc
presumptive prothoracic structures from prothoracic leg disc
Part of prothoracic pleurum
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Synonyms
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https://www.ento.csiro.au/biology/drosophila/melanogaster.html?proepisternum