FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term labial segment ID (Ontology) FBbt:00000014 (Fly Anatomy)
Definition Most posterior of the gnathal segments. In the adult it bears a pair of fused appendages, the labia, and its ectodermal invaginations give rise to the salivary glands.[ FlyBase:FBrf0007734 ]
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Data ClassFieldDirect annotations
Alleles (FBal)PHENOTYPE_MANIFEST_IN
Constructs (FBtp)PHENOTYPE_MANIFEST_IN
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Relevant FlyBase reports
 Alleles Genes Constructs
 labial segment (all annotations which use CV term, excluding "NOT" statements)
     labial segment | cold sensitive
      --
     labial segment | heat sensitive
      --
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  head segment
   |__gnathal segment
       |__labial segment  632 rec.
           |__adult labial segment 419 rec.
           |   |__adult labial neuromere(+)
           |   |__labellum(+) 416 rec.
           |__embryonic labial segment 101 rec.
           |   |__embryonic labial neuromere 2 rec.
           |   |__labial disc primordium 4 rec.
           |__hypostomal sclerite 51 rec.
           |__labial neuroblast MNB
           |__labial neuroblast NB1-1
           |__labial neuroblast NB1-2
           |__labial neuroblast NB2-1
           |__labial neuroblast NB2-2
           |__labial neuroblast NB2-5
           |__labial neuroblast NB3-1
           |__labial neuroblast NB3-2
           |__labial neuroblast NB3-3
           |__labial neuroblast NB3-4
           |__labial neuroblast NB3-5
           |__labial neuroblast NB4-1
           |__labial neuroblast NB4-2
           |__labial neuroblast NB4-3
           |__labial neuroblast NB4-4
           |__labial neuroblast NB5-1
           |__labial neuroblast NB5-2
           |__labial neuroblast NB5-3
           |__labial neuroblast NB5-4
           |__labial neuroblast NB5-6
           |__labial neuroblast NB6-1
           |__labial neuroblast NB6-2
           |__labial neuroblast NB6-4
           |__labial neuroblast NB7-1
           |__labial neuroblast NB7-2
           |__labial neuroblast NB7-3
           |__labial neuroblast NB7-4
           |__labial segment anterior compartment
           |__labial segment posterior compartment
           |__labial sensillum 245 rec.
           |   |__adult labellum sensillum(+) 241 rec.
           |   |__embryonic/larval labial segment sensillum(+) 1 rec.
           |__larval labial segment 64 rec.
               |__embryonic/larval labial segment sensillum(+) 1 rec.
               |__labial disc(+) 33 rec.
               |__larval labial neuromere(+)
               |__larval labial sensory complex(+) 28 rec.
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UBERON:6000014