FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term larval optic neuropil ID (Ontology) FBbt:00048289 (Fly Anatomy)
Definition Small neuropil compartment of the larval optic lobe that contains the axons of photoreceptors. It is the first center for visual processing in the larval brain. It is largely surrounded by the outer optic anlage at earlier developmental stages and becomes sandwiched between the developing proximal medulla and the inner optic anlage by third instar. It is incorporated into the adult optic lobe as the accessory medulla.[ FlyBase:FBrf0215208 ]
Also Known As"LON"
Comment
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VFB:FBbt_00048289
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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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 larval optic neuropil (all annotations which use CV term, excluding "NOT" statements)
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larval central nervous system
 |__larval sensory compartment___
larval protocerebrum             |
 |__embryonic/larval optic lobe__|
multi-tissue structure           |
 |__embryonic/larval optic lobe__|
synaptic neuropil domain         |
 |__larval sensory compartment___|
                                 larval optic neuropil  5 rec.
                                  |__distal larval optic neuropil
                                  |__intermediate larval optic neuropil
                                  |__proximal larval optic neuropil
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Is a larval sensory compartment
Part of embryonic/larval optic lobe
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larvalbrain_neuropil:379
larvalbrain_neuropil:557
VFB:FBbt_00048289