FB2026_03 , released September 17, 2026
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Term pseudotracheal taste peg ID (Ontology) FBbt:00004165 (Fly Anatomy)
Definition Taste peg located in rows between and on the lateral sides of the 6 pseudotracheal rows of the adult labellum. Each peg sensillum contains one putative chemosensory and one mechanosensory neuron. The lateral rows contain 1-5 taste pegs per row, whereas the remaining rows contain 7-9 pegs.[ FlyBase:FBrf0033866 FlyBase:FBrf0137194 ]
CommentThere is significant sexual dimorphism in the number of pseudotracheal taste pegs, with females having 20% more taste pegs than males (Shanbag et al., 2001).
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VFB:FBbt_00004165
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adult labellum sensillum__
gustatory sensory organ___|
eo-type sensillum_________|
                          labellar taste peg
                           |__pseudotracheal taste peg
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VFB:FBbt_00004165