FB2026_03 , released September 17, 2026

CV Term Report

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General Information

Term

tritocerebral neuroblast

ID (Ontology)

FBbt:00001363 (Fly Anatomy)

Definition

A neuroblast located in the tritocerebrum. Most, if not all, of these have serial homology to neuroblasts found in the thoracic neuromeres (Urbach et al., 2016). There are 13 of these, of which four produce a secondary lineage (Kuert et al., 2012; Urbach et al., 2016).[ FlyBase:FBrf0089217 FlyBase:FBrf0161021 FlyBase:FBrf0220148 FlyBase:FBrf0232096 ]

Comment

In the embryo, individual neuroblasts are named according to their position relative to major morphological features (cephalic furrow, invaginating foregut, dorsal and ventral midline, their relative position with respect to each other, their time of segregation and their expression of markers) (Urbach et al., 2003).

Links to External Ontologies

VFB:FBbt_00001363

Annotations

Records annotated with this term OR any of its CHILD TERMS

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Direct annotations: records annotated with this exact term (child terms are NOT included)

Data Class	Field	Direct annotations
Insertions (FBti)	EXPRESSION_STAGE_TISSUE_POSITION

Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records

Full annotation statements	Relevant FlyBase reports
Full annotation statements	Genes	Insertions
tritocerebral neuroblast (all annotations which use CV term, excluding "NOT" statements)

Spanning Tree (Parents/Children)

intercalary segment
 |__tritocerebrum_____________
supraesophageal ganglion      |
 |__tritocerebrum_____________|
neuromere                     |
 |__tritocerebrum_____________|
neuroblast                    |
 |__procephalic neuroblast____|
anterior ectoderm derivative  |
 |__procephalic neuroblast____|
                              tritocerebral neuroblast  35 rec.
                               |__dorsal tritocerebral neuroblast 6 rec.
                               |   |__neuroblast BAmas2(+) 3 rec.
                               |   |__Td1 neuroblast 2 rec.
                               |   |__Td2 neuroblast 3 rec.
                               |   |__Td3 neuroblast 3 rec.
                               |   |__Td4 neuroblast 1 rec.
                               |   |__Td5 neuroblast 1 rec.
                               |   |__Td7 neuroblast 1 rec.
                               |   |__Td8 neuroblast 3 rec.
                               |__neuroblast BAlp4
                               |__neuroblast BAlv
                               |__neuroblast TR
                               |   |__neuroblast TRco
                               |   |__neuroblast TRdl
                               |   |__neuroblast TRdm
                               |   |__neuroblast TRvl
                               |   |__neuroblast TRvm
                               |__ventral tritocerebral neuroblast 7 rec.
                                   |__Tv1 neuroblast 5 rec.
                                   |__Tv2 neuroblast 2 rec.
                                   |__Tv3 neuroblast 2 rec.
                                   |__Tv4 neuroblast 3 rec.
                                   |__Tv5 neuroblast 2 rec.

Spanning Tree View Settings
Parents/Children View Depth	Show hierarchy levels: for parents, for children
Relationships
Is a	procephalic neuroblast
Part of	tritocerebrum
Synonyms & Secondary IDs
Synonyms
	"T" RELATED
Secondary IDs

External Crossreferences & Linkouts
	VFB:FBbt_00001363