part of sensillum of sacculus chamber I VFB:FBbt_00004184 no-pore basiconic sensillum basiconic sensillum of sacculus no-pore sensillum of sacculus FBbt:00004184 Sensillum of chamber I of the sacculus of the antenna (Shanbhag et al., 1995). It is devoid of pores, has no socket at the base and gradually tapers at the distal end, which has an irregularly-sculpted surface (Shanbhag et al., 1995). It houses the sensory dendrites of two hygrosensory neurons, expressing Ir40a and Ir68a (Shanbhag et al., 1995; Marin et al., 2020). Some of these sensilla additionally house one thermosensory neuron, expressing Ir21a (Shanbhag et al., 1995; Marin et al., 2020). no-pore sensilla basiconica np-SB Classed as basiconic by Shanbhag et al. (1995), but lacks characteristic rows of pores to match description in Shanbhag et al. (1999) - FBrf0128642 and Gonzales et al. (2021) - FBrf0250923. fly_anatomy.ontology hygrosensitive sensory organ sensillum chamber I of sacculus sensillum of sacculus