FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term leg ID (Ontology) FBbt:00004640 (Fly Anatomy)
Definition The walking appendages of each segment of the ventral adult external thorax.
Comment
Links to External Ontologies
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    1108
Insertions (FBti)  EXPRESSION_STAGE_TISSUE_POSITION      19
Insertions (FBti)  PHENOTYPE_MANIFEST_IN     164
Constructs (FBtp)  PHENOTYPE_MANIFEST_IN     354
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
 leg (all annotations which use CV term, excluding "NOT" statements)    1108     48      9    182    368
     leg | adult stage       9       --       --       2      5
     leg | adult stage | somatic clone       3       --       --       --       2
     leg | cell autonomous | ectopic | somatic clone       1       --       --       --       --
     leg | cell autonomous | somatic clone       2       --       --       1       --
     leg | cell non-autonomous | somatic clone       2       --       --       --       2
     leg | cell non-autonomous | somatic clone | ventral       1       --       --       --       --
     leg | chemical conditional       2       --       --       --       1
     leg | cold sensitive       5       --       --       --       2
     leg | distal      58       --       --       3     33
     leg | distal | ectopic       9       --       --       --       7
     leg | distal | ectopic | somatic clone       3       --       --       --       3
     leg | distal | heat sensitive       5       --       --       2      1
     leg | distal | somatic clone       3       --       --       --       --
     leg | dorsal | pharate adult stage       2       --       --       1       --
     leg | dorsal | somatic clone       3       --       --       --       --
     leg | ectopic      94       --       --      10     59
     leg | ectopic | cold sensitive       4       --       --       --       2
     leg | ectopic | female       2       --       --       --       2
     leg | ectopic | medial       1       --       --       --       --
     leg | ectopic | proximal       1       --       --       --       --
     leg | ectopic | proximal | somatic clone       3       --       --       --       3
     leg | ectopic | somatic clone      17       --       --       1      4
     leg | female       2       --       --       --       2
     leg | female | germline clone       1       --       --       --       --
     leg | heat sensitive      26       --       --       3     11
     leg | increased number       2       --       --       --       1
     leg | male       4       --       --       --       2
     leg | maternal effect       2       --       --       2       --
     leg | medial       4       --       --       --       3
     leg | P-stage      20       --       --       --       5
     leg | P-stage | germline clone | maternal effect       1       --       --       --       --
     leg | pharate adult stage      26       --       --       9     10
     leg | pharate adult stage P10       2       --       --       --       --
     leg | pharate adult stage | ventral       2       --       --       1       --
     leg | posterior | somatic clone       2       --       --       --       --
     leg | prepupal stage       4       --       --       --       --
     leg | proximal       7       --       --       2      3
     leg | proximal | somatic clone       5       --       --       --       --
     leg | pupal stage      19       --       --       2     13
     leg | somatic clone      65       --       --       8     19
     leg | somatic clone - Minute background       4       --       --       1       --
     leg | somatic clone | increased number       1       --       --       --       --
     leg | somatic clone | ventral       3       --       --       --       --
     leg | ventral | heat sensitive       1       --       --       --       --
Spanning Tree (Parents/Children)
Only view relationship:
thoracic segment
 |__adult thoracic segment__________
adult                               |
 |__appendage_______________________|
adult segment                       |
 |__adult thoracic segment__________|
adult thorax                        |
 |__adult thoracic segment__________|
 |__adult external thorax___________|
adult integumentary system          |
 |__adult external thorax___________|
organism subdivision                |
 |__appendage_______________________|
tagmatic subdivision of integument  |
 |__adult external thorax___________|
                                    leg  3361 rec.
                                     |__chordotonal organ of leg 38 rec.
                                     |   |__femoral chordotonal organ(+) 28 rec.
                                     |__leg anterior compartment 25 rec.
                                     |   |__mesothoracic leg anterior compartment 5 rec.
                                     |   |__metathoracic leg anterior compartment 7 rec.
                                     |   |__prothoracic leg anterior compartment 2 rec.
                                     |__leg dorsal compartment
                                     |__leg joint 302 rec.
                                     |   |__body-coxa joint(+)
                                     |   |__coxa-trochanter joint(+)
                                     |   |__femur-tibia joint(+)
                                     |   |__tibia-tarsus joint(+) 4 rec.
                                     |__leg muscle of leg 53 rec.
                                     |   |__mesothoracic accessory tibial flexor muscle(+)
                                     |   |__mesothoracic accessory trochanter levator muscle(+)
                                     |   |__mesothoracic femoral depressor muscle(+)
                                     |   |__mesothoracic tarsal levator muscle 73(+)
                                     |   |__mesothoracic tarsal retro depressor muscle(+)
                                     |   |__mesothoracic tibial depressor muscle 71(+)
                                     |   |__metathoracic accessory tibial flexor muscle(+)
                                     |   |__metathoracic accessory trochanter levator muscle(+)
                                     |   |__metathoracic femoral depressor muscle(+)
                                     |   |__metathoracic tarsal levator muscle 94(+)
                                     |   |__metathoracic tarsal retro depressor muscle(+)
                                     |   |__metathoracic tibial depressor muscle 92(+)
                                     |   |__muscle cell of leg muscle of leg(+) 37 rec.
                                     |   |__pretarsal depressor muscle(+) 1 rec.
                                     |   |__prothoracic accessory tibial flexor muscle(+) 1 rec.
                                     |   |__prothoracic accessory trochanter levator muscle(+)
                                     |   |__prothoracic femoral depressor muscle(+)
                                     |   |__prothoracic tarsal levator muscle 42(+) 1 rec.
                                     |   |__prothoracic tarsal retro depressor muscle(+)
                                     |   |__prothoracic tibial depressor muscle 40(+) 1 rec.
                                     |__leg posterior compartment 10 rec.
                                     |   |__mesothoracic leg posterior compartment 6 rec.
                                     |   |__metathoracic leg posterior compartment 5 rec.
                                     |   |__prothoracic leg posterior compartment 2 rec.
                                     |__leg sensillum 289 rec.
                                     |   |__campaniform sensillum of leg(+) 5 rec.
                                     |   |__femoral chordotonal organ scolopidium(+) 5 rec.
                                     |   |__leg mechanosensory bristle(+) 119 rec.
                                     |   |__leg taste bristle(+) 31 rec.
                                     |   |__mesothoracic leg sensillum(+) 134 rec.
                                     |   |__metathoracic leg sensillum(+) 84 rec.
                                     |   |__prothoracic leg sensillum(+) 173 rec.
                                     |__leg ventral compartment 1 rec.
                                     |__mesothoracic leg 371 rec.
                                     |   |__mesothoracic accessory tibial flexor muscle(+)
                                     |   |__mesothoracic accessory trochanter levator muscle(+)
                                     |   |__mesothoracic coxa(+) 10 rec.
                                     |   |__mesothoracic coxa-trochanter joint
                                     |   |__mesothoracic femoral depressor muscle(+)
                                     |   |__mesothoracic femur(+) 29 rec.
                                     |   |__mesothoracic femur-tibia joint
                                     |   |__mesothoracic leg anterior compartment 5 rec.
                                     |   |__mesothoracic leg hair plate(+) 1 rec.
                                     |   |__mesothoracic leg posterior compartment 6 rec.
                                     |   |__mesothoracic leg sensillum(+) 134 rec.
                                     |   |__mesothoracic pretarsal depressor muscle(+)
                                     |   |__mesothoracic tarsal levator muscle 73(+)
                                     |   |__mesothoracic tarsal retro depressor muscle(+)
                                     |   |__mesothoracic tarsus(+) 84 rec.
                                     |   |__mesothoracic tibia(+) 61 rec.
                                     |   |__mesothoracic tibia-tarsus joint
                                     |   |__mesothoracic tibial depressor muscle 71(+)
                                     |   |__mesothoracic trochanter(+) 2 rec.
                                     |   |__proximal joint of mesothoracic coxa
                                     |__metathoracic leg 413 rec.
                                     |   |__metathoracic accessory tibial flexor muscle(+)
                                     |   |__metathoracic accessory trochanter levator muscle(+)
                                     |   |__metathoracic coxa(+) 16 rec.
                                     |   |__metathoracic coxa-trochanter joint
                                     |   |__metathoracic femoral depressor muscle(+)
                                     |   |__metathoracic femur(+) 52 rec.
                                     |   |__metathoracic femur-tibia joint
                                     |   |__metathoracic leg anterior compartment 7 rec.
                                     |   |__metathoracic leg hair plate(+) 1 rec.
                                     |   |__metathoracic leg posterior compartment 5 rec.
                                     |   |__metathoracic leg sensillum(+) 84 rec.
                                     |   |__metathoracic pretarsal depressor muscle(+)
                                     |   |__metathoracic tarsal levator muscle 94(+)
                                     |   |__metathoracic tarsal retro depressor muscle(+)
                                     |   |__metathoracic tarsus(+) 81 rec.
                                     |   |__metathoracic tibia(+) 46 rec.
                                     |   |__metathoracic tibia-tarsus joint
                                     |   |__metathoracic tibial depressor muscle 92(+)
                                     |   |__metathoracic trochanter(+) 8 rec.
                                     |   |__proximal joint of metathoracic coxa
                                     |__prothoracic leg 724 rec.
                                     |   |__prothoracic accessory tibial flexor muscle(+) 1 rec.
                                     |   |__prothoracic accessory trochanter levator muscle(+)
                                     |   |__prothoracic coxa(+) 18 rec.
                                     |   |__prothoracic coxa-trochanter joint
                                     |   |__prothoracic femoral depressor muscle(+)
                                     |   |__prothoracic femur(+) 26 rec.
                                     |   |__prothoracic femur-tibia joint
                                     |   |__prothoracic leg anterior compartment 2 rec.
                                     |   |__prothoracic leg hair plate(+) 1 rec.
                                     |   |__prothoracic leg posterior compartment 2 rec.
                                     |   |__prothoracic leg sensillum(+) 173 rec.
                                     |   |__prothoracic pretarsal depressor muscle(+) 1 rec.
                                     |   |__prothoracic tarsal levator muscle 42(+) 1 rec.
                                     |   |__prothoracic tarsal retro depressor muscle(+)
                                     |   |__prothoracic tarsus(+) 557 rec.
                                     |   |__prothoracic tibia(+) 50 rec.
                                     |   |__prothoracic tibia-tarsus joint
                                     |   |__prothoracic tibial depressor muscle 40(+) 1 rec.
                                     |   |__prothoracic trochanter(+) 8 rec.
                                     |   |__proximal joint of prothoracic coxa
                                     |__segment of leg 1759 rec.
                                         |__coxa(+) 55 rec.
                                         |__femur(+) 272 rec.
                                         |__pretarsus(+) 356 rec.
                                         |__tarsal segment(+) 1362 rec.
                                         |__tarsus(+) 1366 rec.
                                         |__tibia(+) 283 rec.
                                         |__trochanter(+) 38 rec.
Spanning Tree View Settings
Parents/Children
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Is a appendage
Part of adult thoracic segment
adult external thorax
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Synonyms
Secondary IDs
hide External Crossreferences & Linkouts
https://www.ento.csiro.au/biology/drosophila/melanogaster.html?legs
UBERON:0005895