FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term mesothoracic femur ID (Ontology) FBbt:00004689 (Fly Anatomy)
Definition Segment of the mesothoracic leg. Proximally, it articulates with the trochanter and distally with the tibia. In the posterior compartment many of the bristles are missing, including the very large bristles (zone of no bristles, ZNB).[ FlyBase:FBrf0031004 FlyBase:FBrf0219028 ]
Also Known As"T2 femur"
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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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 mesothoracic femur (all annotations which use CV term, excluding "NOT" statements)
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adult mesothoracic segment
 |__mesothoracic leg_________
leg                          |
 |__mesothoracic leg_________|
segment of leg               |
 |__femur____________________|
ventral ectoderm derivative  |
 |__mesothoracic leg_________|
                             mesothoracic femur  29 rec.
                              |__mesothoracic femoral bract 8 rec.
                              |__mesothoracic femoral campaniform sensillum
                              |   |__mesothoracic femoral campaniform sensillum Sc1
                              |   |__mesothoracic femoral campaniform sensillum Sc11
                              |__mesothoracic femoral chordotonal organ 7 rec.
                                  |__mesothoracic femoral chordotonal organ 1
                                  |__mesothoracic femoral chordotonal organ 2
                                  |__mesothoracic femoral chordotonal organ 3
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Is a femur
Develops from presumptive mesothoracic femur
Part of mesothoracic leg
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Synonyms
  • "T2 femur" EXACT
Secondary IDs
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https://www.ento.csiro.au/biology/drosophila/melanogaster.html?mesofemur