FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term adult labral sense organ ID (Ontology) FBbt:00004146 (Fly Anatomy)
Definition Sense organ that extends along the adult hypopharynx. It comprises a heterogeneous group of nine sensilla, numbered from proximal to distal, containing a total of 8 mechanosensory and 10 gustatory receptor neurons. Three of these sensilla are gustatory, one with 3 neurons and the others with one each. The remaining 6 sensilla are mechanosensory (Nayak and Singh, 1985). It develops from the dorsal pharyngeal sense organ.[ FlyBase:FBrf0035962 FlyBase:FBrf0074012 FlyBase:FBrf0167539 FlyBase:FBrf0200422 ]
Also Known As"adult labial organ" ; "LSO" ; "lso"
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VFB:FBbt_00004146
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Data ClassFieldDirect annotations
Alleles (FBal)PHENOTYPE_MANIFEST_IN
Insertions (FBti)EXPRESSION_STAGE_TISSUE_POSITION
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 adult labral sense organ (all annotations which use CV term, excluding "NOT" statements)
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adult
 |__adult sense organ_______
adult pharynx               |
 |__adult hypopharynx_______|
sense organ                 |
 |__adult sense organ_______|
 |__pharyngeal sense organ__|
pharynx                     |
 |__pharyngeal sense organ__|
hypopharynx                 |
 |__adult hypopharynx_______|
                            adult labral sense organ  12 rec.
                             |__adult labral sensillum
                                 |__chemosensory labral sensillum 7
                                 |__mechano-chemo-sensory labral sensillum(+)
                                 |__mechanosensory labral sensillum(+)
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Is a adult sense organ
pharyngeal sense organ
Develops from dorsal pharyngeal sense organ
Part of adult hypopharynx
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VFB:FBbt_00004146