FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term maxillary palp bristle ID (Ontology) FBbt:00004160 (Fly Anatomy)
Definition Trichoid sensillum of the maxillary palp. It has an external sensory structure that consists of a bundle of smaller, closely apposed fibers, each of which is marked by oblique grooves (Riesgo-Escovar et al., 1997). It has no pores and is anchored in a prominent socket, indicative of mechanosensory function (Riesgo-Escovar et al., 1997). There are approximately 15-20 of these on each maxillary palp (Riesgo-Escovar et al., 1997; Eichler et al., 2024). They are generally found on the distal tip and lateral edge of the palp (Riesgo-Escovar et al., 1997).[ FlyBase:FBrf0091407 FlyBase:FBrf0259346 ]
Also Known As"MaPa bristle" ; "sensillum trichodeum of maxillary palpus"
CommentStructure is consistent with these sensilla being mechanosensory rather than chemosensory (Riesgo-Escovar et al., 1997).
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VFB:FBbt_00004160
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 maxillary palp bristle (all annotations which use CV term, excluding "NOT" statements)
     maxillary palp bristle | somatic clone
      --
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adult sense organ
 |__maxillary palp sense organ__
maxillary palp                  |
 |__maxillary palp sense organ__|
mechanosensory sensory organ    |
 |__mechanosensory chaeta_______|
chaeta                          |
 |__adult head bristle__________|
 |__mechanosensory chaeta_______|
eo-type sensillum               |
 |__trichoid sensillum__________|
adult head sensillum            |
 |__adult head bristle__________|
                                maxillary palp bristle  17 rec.
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Is a adult head bristle
maxillary palp sense organ
mechanosensory chaeta
trichoid sensillum
Part of maxillary palp sense organ
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VFB:FBbt_00004160