FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term pulvillus ID (Ontology) FBbt:00004655 (Fly Anatomy)
Definition Lateral lobe of the pretarsus, ventral to the auxiliae and proximal to the claws (unguis). It consists of a proximal, stiffer base part and a more flexible part, as well as approximately 30 setae (Husken et al., 2015). The setae are hair-like cuticle outgrowths that differentiate from epidermal cells and have spatula-like terminal contact zones (Husken et al., 2015; Kimura et al., 2020; Tanaka et al., 2023). Fluid secretions coat these terminal contact zones, facilitating adhesion to smooth surfaces and leaving footprints where the fly walks (Husken et al., 2015). There are two of these per leg (Husken et al., 2015; Tanaka et al., 2023).[ FlyBase:FBrf0007734 FlyBase:FBrf0111704 FlyBase:FBrf0228206 FlyBase:FBrf0256338 ]
Also Known As"footpad" ; "plantula"
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Data ClassFieldDirect annotations
Alleles (FBal)PHENOTYPE_MANIFEST_IN
Insertions (FBti)PHENOTYPE_MANIFEST_IN
Constructs (FBtp)PHENOTYPE_MANIFEST_IN
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Relevant FlyBase reports
 Alleles Images Insertions Constructs
 pulvillus (all annotations which use CV term, excluding "NOT" statements)
     pulvillus | ectopic
      --       --       --
     pulvillus | ectopic | somatic clone
      --       --       --
     pulvillus | somatic clone
      --
      --
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segment of leg
 |__pretarsus______________
region of integument       |
 |__integumentary process__|
                           pulvillus  22 rec.
                            |__mesothoracic pulvillus
                            |   |__seta of mesothoracic pulvillus
                            |__metathoracic pulvillus
                            |   |__seta of metathoracic pulvillus
                            |__prothoracic pulvillus
                            |   |__seta of prothoracic pulvillus
                            |__seta of pulvillus
                                |__seta of mesothoracic pulvillus
                                |__seta of metathoracic pulvillus
                                |__seta of prothoracic pulvillus
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Is a integumentary process
Develops from footpad hair cell
Part of pretarsus
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Synonyms
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https://www.ento.csiro.au/biology/drosophila/melanogaster.html?pulvilli