FB2026_03 , released September 17, 2026

CV Term Report

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General Information

Term

larval dorsal hair

ID (Ontology)

FBbt:00004980 (Fly Anatomy)

Definition

Hair on the dorsal surface of the larva on all segments except the prothorax, which is devoid of them. Members of this group are distributed in a well defined pattern. In the thoracic segments, three types of hairs are seen, organized in regions from anterior to posterior. In the abdominal segments, there are only two types, corresponding to the types seen in the anterior region of the thoracic segments. The polarity of the hairs is also different between the thoracic and abdominal segments.[ FlyBase:FBrf0089570 ]

Comment

Disambiguation: a dorsal hair differs from a dorsal sensory hair (see figure 3.14 of Campos-Ortega and Hartenstein, 1997) in that it is a trichome, and therefore is not innervated.

Links to External Ontologies

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
Alleles (FBal)	PHENOTYPE_MANIFEST_IN
Insertions (FBti)	PHENOTYPE_MANIFEST_IN
Constructs (FBtp)	PHENOTYPE_MANIFEST_IN

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	Alleles	Genes	Insertions	Constructs
larval dorsal hair (all annotations which use CV term, excluding "NOT" statements)
larval dorsal hair \| ectopic		--	--	--
larval dorsal hair \| ectopic \| embryonic stage		--	--	--
larval dorsal hair \| embryonic stage		--	--	--
larval dorsal hair \| maternal effect		--	--	--

Spanning Tree (Parents/Children)

cuticle
 |__embryonic/larval cuticle__
larval integumentary system   |
 |__embryonic/larval cuticle__|
cuticular specialization      |
 |__trichome__________________|
                              larval dorsal hair  95 rec.
                               |__dorsal fine hair 20 rec.
                               |__dorsal thick hair 24 rec.
                               |__larval abdominal dorsal trichome 8 rec.
                               |   |__abdominal 1 dorsal trichome
                               |   |__abdominal 2 dorsal trichome
                               |   |__abdominal 3 dorsal trichome
                               |   |__abdominal 4 dorsal trichome
                               |   |__abdominal 5 dorsal trichome
                               |   |__abdominal 6 dorsal trichome
                               |   |__abdominal 7 dorsal trichome
                               |   |__abdominal 8 dorsal trichome
                               |__mesothoracic dorsal trichome 6 rec.
                               |__metathoracic dorsal trichome 6 rec.
                               |__prothoracic dorsal trichome 7 rec.

Spanning Tree View Settings
Parents/Children View Depth	Show hierarchy levels: for parents, for children
Relationships
Is a	trichome
Part of	embryonic/larval cuticle
Synonyms & Secondary IDs
Synonyms

Secondary IDs

External Crossreferences & Linkouts