FB2026_03 , released September 17, 2026
CV Term Report
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Term large basiconic sensillum of antennal segment 3 ID (Ontology) FBbt:00004175 (Fly Anatomy)
Definition Large, olfactory basiconic sensillum of antennal segment 3, measuring around 12 micrometers in length and 2.5 micrometers in width, with a blunt tip (Shanbhag et al., 1999). Directly above the base of the sensillum, the shaft diameter is often somewhat reduced resulting in a club-shaped appearance (Shanbhag et al., 1999). The external sensory structure is perforated by pores, arranged along a complicated pattern of branched lines, that connect to a lymph-filled lumen containing the highly branched dendrites of 2-4 ORNs (Shanbhag et al., 1999).[ FlyBase:FBrf0128642 ]
Also Known As"large sensillum basiconicum of antennal segment 3"
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VFB:FBbt_00004175
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Data ClassFieldDirect annotations
Alleles (FBal)PHENOTYPE_MANIFEST_IN
Constructs (FBtp)PHENOTYPE_MANIFEST_IN
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 large basiconic sensillum of antennal segment 3 (all annotations which use CV term, excluding "NOT" statements)
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antennal segment 3 sense organ
 |__basiconic sensillum of antennal segment 3__
chemosensory sensory organ                     |
 |__olfactory sensory organ____________________|
basiconic sensillum                            |
 |__basiconic sensillum of antennal segment 3__|
olfactory system                               |
 |__olfactory sensory organ____________________|
adult antennal sensillum                       |
 |__basiconic sensillum of antennal segment 3__|
                                               large basiconic sensillum of antennal segment 3  38 rec.
                                                |__antennal basiconic sensillum ab1 19 rec.
                                                |__antennal basiconic sensillum ab2 8 rec.
                                                |__antennal basiconic sensillum ab3 9 rec.
                                                |__receptor lymph space of large basiconic sensillum
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Is a basiconic sensillum of antennal segment 3
olfactory sensory organ
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Synonyms
  • "large sensillum basiconicum of antennal segment 3" EXACT
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VFB:FBbt_00004175