FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
Help Close All Open All
General Information
Term sensillum of sacculus chamber II ID (Ontology) FBbt:00004183 (Fly Anatomy)
Definition Sensillum of chamber II of the sacculus of the antenna (Shanbhag et al., 1995). This sacculus chamber is divided into multiple compartments, each of which houses one of these sensilla in a pit (Shanbhag et al., 1995). It has a smooth cuticular surface, lacking pores, and a plugged pore-like structure at its distal tip (Shanbhag et al., 1995). It houses the sensory dendrites of three hygrosensory neurons, two expressing Ir40a and one expressing Ir68a (Shanbhag et al., 1995; Enjin et al., 2016; Marin et al., 2020).[ FlyBase:FBrf0084361 FlyBase:FBrf0232388 FlyBase:FBrf0246456 ]
Also Known As "blunt-tipped sensillum of sacculus" ; "np-Sc"
Comment Classified as coeloconic by Shanbhag et al. (1995), but morphologically dissimilar to 'coeloconic' sensilla of the antennal surface - which are not located in a pit (Shanbhag et al., 1999 - FBrf0084361).
Links to External Ontologies
VFB:FBbt_00004183
Annotations
Records annotated with this term OR any of its CHILD TERMS
    Results list data from multiple species. Click on a button above and use the 'Filter by species' options on the resulting HitList to retrieve species-specific data.
Records annotated with this exact term (annotations to child terms are NOT included)
No relevant records available
show Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records
 Full annotation statements 
Relevant FlyBase reports
 Constructs
 sensillum of sacculus chamber II (all annotations which use CV term, excluding "NOT" statements)       2
Spanning Tree (Parents/Children)
Only view relationship: 
antennal segment 3 sense organ
 |__sensillum of sacculus_________
sense organ                       |
 |__hygrosensitive sensory organ__|
chemosensory sensory organ        |
 |__coeloconic sensillum__________|
eo-type sensillum                 |
 |__coeloconic sensillum__________|
adult antennal sensillum          |
 |__sensillum of sacculus_________|
                                  sensillum of sacculus chamber II  2 rec.
Spanning Tree View Settings
Parents/Children
View Depth
Show hierarchy levels: for parents, for children
hide Relationships
Is a hygrosensitive sensory organ
coeloconic sensillum
sensillum of sacculus
Part of chamber II of sacculus
hide Synonyms & Secondary IDs
Synonyms
Secondary IDs
hide External Crossreferences & Linkouts
VFB:FBbt_00004183