FB2026_03 , released September 17, 2026

CV Term Report

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General Information

Term

eyelet photoreceptor cell

ID (Ontology)

FBbt:00005740 (Fly Anatomy)

Definition

Cholinergic, rhabdomeric photoreceptor cell of the eyelet (Yasuyama and Meinertzhagen, 1999). It expresses Rh6 and is green light-sensitive (Jean-Guillaume and Kumar, 2022). It develops from an Rh5 photoreceptor of the larval Bolwig organ, which changes its Rhodopsin expression during pupal development (Jean-Guillaume and Kumar, 2022). Its functions in the entrainment of the circadian clock (Helfrich-Forster et al., 2002). Its axon terminates in the accessory medulla (Helfrich-Forster et al., 2007). There are four of these cells per eyelet (Jean-Guillaume and Kumar, 2022).[ FlyBase:FBrf0111143 FlyBase:FBrf0152146 FlyBase:FBrf0193849 FlyBase:FBrf0255165 ]

Also Known As

"H-B eyelet photoreceptor" ; "HBeyelet"

Comment

Evidence that this is a cholinergic sensory neuron comes from staining for choline acetyltransferase expression. (Yasuyama and Meinertzhagen, 1999).

Links to External Ontologies

VFB:FBbt_00005740

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)	EXPRESSION_STAGE_TISSUE_POSITION
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
eyelet photoreceptor cell (all annotations which use CV term, excluding "NOT" statements)

Spanning Tree (Parents/Children)

light-sensitive neuron
 |__rhabdomeric photoreceptor cell__
sensory neuron                      |
 |__adult sensory neuron____________|
cholinergic neuron                  |
 |__adult cholinergic neuron________|
adult neuron                        |
 |__accessory medulla neuron________|
 |__adult cholinergic neuron________|
 |__adult sensory neuron____________|
 |__adult PNS neuron________________|
PNS neuron                          |
 |__adult PNS neuron________________|
somatic cell                        |
 |__sensory organ cell______________|
                                    eyelet photoreceptor cell  23 rec.

Spanning Tree View Settings
Parents/Children View Depth	Show hierarchy levels: for parents, for children
Relationships
Is a	sensory organ cell rhabdomeric photoreceptor cell accessory medulla neuron adult cholinergic neuron adult sensory neuron adult PNS neuron
Develops from	Rh5 photoreceptor of Bolwig organ
Part of
Synonyms & Secondary IDs
Synonyms
	"H-B eyelet photoreceptor" EXACT "HBeyelet" EXACT VFB_SYMBOL
Secondary IDs

External Crossreferences & Linkouts
	VFB:FBbt_00005740