FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
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"
Comment
Links to External Ontologies
VFB:FBbt_00004507
Annotations
Records annotated with this term OR any of its CHILD TERMS
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Records annotated with this exact term (annotations to child terms are NOT included)
Data Class Field Records
Alleles (FBal)  PHENOTYPE_MANIFEST_IN      14
Insertions (FBti)  PHENOTYPE_MANIFEST_IN       1
show Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records
 Full annotation statements 
Relevant FlyBase reports
 Alleles Images Insertions
 medial ocellus (all annotations which use CV term, excluding "NOT" statements)      14      2      1
     medial ocellus | adult stage | somatic clone       1       --       --
     medial ocellus | somatic clone | increased number       3       --       --
Spanning Tree (Parents/Children)
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photoreceptor_________
external sensillum____|
adult head sensillum__|
                      ocellus
                       |__medial ocellus  17 rec.
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UBERON:0003211
VFB:FBbt_00004507