FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term medial ocellus ID (Ontology) FBbt:00004507 (Fly Anatomy)
Definition Medial ocellus located on the ocellar triangle of the dorsal postfrons of the adult head, just anterior to, and in between the two medial ocelli. It has around 75 photoreceptors (Dorkenwald et al., 2024). Each half is formed by one of the two (left and right) eye discs (Jean-Guillaume and Kumar, 2022).[ FlyBase:FBrf0007734 FlyBase:FBrf0031004 FlyBase:FBrf0050358 FlyBase:FBrf0255165 FlyBase:FBrf0260546 ]
Also Known As"anterior ocellus" ; "aOC"
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VFB:FBbt_00004507
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Data ClassFieldDirect annotations
Alleles (FBal)PHENOTYPE_MANIFEST_IN
Insertions (FBti)PHENOTYPE_MANIFEST_IN
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 medial ocellus (all annotations which use CV term, excluding "NOT" statements)
     medial ocellus | adult stage | somatic clone
      --       --
     medial ocellus | somatic clone | increased number
      --       --
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ocellar triangle______
photoreceptor_________|
external sensillum____|
adult head sensillum__|
                      ocellus
                       |__medial ocellus  17 rec.
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UBERON:0003211
VFB:FBbt_00004507