FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term katepisternum ID (Ontology) FBbt:00004599 (Fly Anatomy)
Definition The lower part of the mesothoracic episternum. It is separated from the dorsal mesothoracic episternum (anepisternum or mesopleuron) by the anapleural suture.[ FlyBase:FBrf0037040 FlyBase:FBrf0068392 FlyBase:FBrf0166419 ]
Comment Accordingly to McAlpine (1981) the mesothoracic katepisternum is frequently, but incorrectly called the sternopleuron (as in Steiner 1976). Although in Diptera the mesosternum (ventral sclerite of the mesothorax) is greatly reduced and internalized, it is not fused with the katepisternum, and thus the latter should not be called sternopleuron. However, it seems that most publications still use the term sternopleuron (or sternopleurite) to refer to the katepisternum - https://orcid.org/0000-0001-5948-3092.
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  region of integument
   |__sclerite
       |__katepisternum  2 rec.
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Is a sclerite
Develops from presumptive mesothoracic structures from mesothoracic leg disc
Part of mesothoracic episternum
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https://www.ento.csiro.au/biology/drosophila/melanogaster.html?katepisternum