FB2026_03 , released September 17, 2026

CV Term Report

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General Information

Term

femoral chordotonal claw neuron

ID (Ontology)

FBbt:00049557 (Fly Anatomy)

Definition

Femoral chordotonal organ (FeCO) neuron with a projection that splits into three branches upon entering the ventral nerve cord, giving it a claw-like morphology (Phillis et al., 1996; Mamiya et al., 2018). One branch follows the direction of the club neurons medially, another projects dorsally and another anteriorly (Mamiya et al., 2018). Its soma is found in a characteristic blade-shaped strip along the long axis of the femur (Mamiya et al., 2018). It encodes sensory information about tibial position (Agrawal et al., 2020).[ FlyBase:FBrf0090742 FlyBase:FBrf0240598 FlyBase:FBrf0247582 ]

Also Known As

"FeCO claw neuron"

Comment

Links to External Ontologies

VFB:FBbt_00049557

Annotations

Records annotated with this term OR any of its CHILD TERMS

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Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records

Full annotation statements	Relevant FlyBase reports
Full annotation statements	Alleles	Constructs
femoral chordotonal claw neuron (all annotations which use CV term, excluding "NOT" statements)

Spanning Tree (Parents/Children)

mechanosensory neuron of leg chordotonal organ
 |__mechanosensory neuron of femoral chordotonal organ____________
 |__non-ascending mechanosensory neuron of leg chordotonal organ__|
proprioceptive sensory neuron                                     |
 |__mechanosensory neuron of femoral chordotonal organ____________|
adult cholinergic neuron                                          |
 |__mechanosensory neuron of femoral chordotonal organ____________|
                                                                  femoral chordotonal claw neuron  2 rec.
                                                                   |__femoral chordotonal claw extension neuron
                                                                   |   |__mesothoracic femoral chordotonal claw extension neuron
                                                                   |   |__metathoracic femoral chordotonal claw extension neuron
                                                                   |   |__prothoracic femoral chordotonal claw extension neuron
                                                                   |__femoral chordotonal claw flexion neuron
                                                                   |   |__mesothoracic femoral chordotonal claw flexion neuron
                                                                   |   |__metathoracic femoral chordotonal claw flexion neuron
                                                                   |   |__prothoracic femoral chordotonal claw flexion neuron
                                                                   |__mesothoracic femoral chordotonal claw neuron
                                                                   |   |__mesothoracic femoral chordotonal claw extension neuron
                                                                   |   |__mesothoracic femoral chordotonal claw flexion neuron
                                                                   |__metathoracic femoral chordotonal claw neuron
                                                                   |   |__metathoracic femoral chordotonal claw extension neuron
                                                                   |   |__metathoracic femoral chordotonal claw flexion neuron
                                                                   |__prothoracic femoral chordotonal claw neuron
                                                                       |__prothoracic femoral chordotonal claw extension neuron
                                                                       |__prothoracic femoral chordotonal claw flexion neuron

Spanning Tree View Settings
Parents/Children View Depth	Show hierarchy levels: for parents, for children
Relationships
Is a	mechanosensory neuron of femoral chordotonal organ non-ascending mechanosensory neuron of leg chordotonal organ
Part of
Synonyms & Secondary IDs
Synonyms
	"FeCO claw neuron" EXACT
Secondary IDs

External Crossreferences & Linkouts
	VFB:FBbt_00049557