Tag: Sensory_neuron

abdominal 1 lateral multidendritic neuron ldaB [FBbt_00002427]

Any abdominal lateral multidendritic neuron ldaB (FBbt:00002426) that is part of some larval abdominal segment 1 (FBbt:00001748). Campos-Ortega and Hartenstein, 1997, have this labelled as a tracheal dendritic neuron ‘ltd’ - but analysis in Grueber et al., 2002, shows this to be a class III da neuron. The name ltd is also sometimes used as a synonym for istd, an unrelated tracheal dendritic neuron found near the anterior segment boundary of A1-7.

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abdominal desA neuron [FBbt_00002321]

Larval desA neuron of an abdominal neuromere. It is associated either with abdominal dorsal trichoid sensillum dh1 or with abdominal dorsal trichoid sensillum dh2. Fasciculates with the intersegmental nerve (Campos-Ortega and Hartenstein, 1997). From the current literature on abdominal desA and desB neurons (02/2010), it is not clear whether dh1 (the smaller, anteriorly located abdominal dorsal trichoid sensillum) is innervated by desA or desB. Similarly with dh2 (the larger abdominal dorsal trichoid sensillum). sr110210.

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abdominal desB neuron [FBbt_00002329]

Larval desB neuron of an abdominal neuromere. It is associated either with abdominal dorsal trichoid sensillum dh1 or with abdominal dorsal trichoid sensillum dh2. Fasciculates with the intersegmental nerve (Campos-Ortega and Hartenstein, 1997). From the current literature on abdominal desA and desB neurons (02/2010), it is not clear whether dh1 (the smaller, anteriorly located abdominal dorsal trichoid sensillum) is innervated by desA or desB. Similarly with dh2 (the larger abdominal dorsal trichoid sensillum). sr110210.

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abdominal dorsal bipolar neuron dbp [FBbt_00002442]

Bipolar multidendritic neuron in the dorsal sensory cluster of larval abdominal segments 1-7. It emits two longitudinal dendritic branches along dorsal acute muscle 3 (Williams and Shepherd, 1999), and fasciculates with the intersegmental nerve (Campos-Ortega and Hartenstein, 1997). It is a proprioceptor neuron (Heckscher et al., 2015). It has a large number of output synapses to A02a neurons (Schneider-Mizell et al., 2016) and also provides input to Jaam1 and Jaam3 neurons (Heckscher et al., 2015). The function of these neurons is not clear and they do not seem to innervate any particular structure. The two dorsal longitudinal dendrites may be joined between segments and establish the dorsal longitudinal nerve, DLN (Bodmer et al., 1989) (Smith and Shepherd, 1996). The number of output synapses to A02a (35/35, L/R) in Schneider-Mizell et al. (2016) was estimated from the publication figures.

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abdominal dorsal multidendritic neuron ddaD [FBbt_00002410]

Multidendritic neuron in the dorsal sensory cluster of larval abdominal segments 1-7. Based on its dendritic pattern, it is a class I dendritic arborizing neuron. It has strong outputs to the Jaam2 and Jaam3 neurons (Heckscher et al., 2015), as well as A27j and A02b (Schneider-Mizell et al., 2016). It is remodeled into the adult ddaD neuron during metamorphosis (Shimono et al., 2009). These neurons were identified in two EM reconstructions: one of the full CNS of a 6h old first instar larva, and another of abdominal segment 3 of a 12-24h old first instar larva (Heckscher et al., 2015; Schneider-Mizell et al., 2016). For Heckscher et al. (2015) only bilateral connections are reported. The number of identified output synapses in A1 was the following (number in brackets left/right): to Jaam2 (34/25), Jaam3 (35/40). It is still not known if the pattern of connections with Jaam neurons in A1 is replicated in the other abdominal segments (Heckscher et al., 2015). For Schneider-Mizell et al. (2016), the number of connections was estimated from the publication figures. The number of output synapses was the following (number in brackets left/right where available; ipsi- and contralateral connections separated by comma): to A27j (21), A02b (10, 14/15, 15) (Schneider-Mizell et al., 2016).

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abdominal lateral multidendritic neuron ldaA [FBbt_00002434]

Multidendritic neuron in the lateral sensory cluster of larval abdominal segments 1-7. Based on its dendritic pattern, it is a class II dendritic arborizing neuron. It is remodeled into the adult ldaA neuron during metamorphosis (Shimono et al., 2009). Disambiguation - there is a multidendritic neuron of the lateral sensory cluster of T2 and T3 with the name ldaA (Campos-Ortega and Hartenstein, 1997), but this likely reflects a naming coincidence rather than indicating they should be classified with the ldaA neurons of A1-7.

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abdominal lateral multidendritic neuron ldaB [FBbt_00002426]

Multidendritic neuron in the lateral sensory cluster of larval abdominal segments 1-7. Its dendrites harbour long primary and secondary branches with many spiked protrusions (1-20um) along most of their length. Campos-Ortega and Hartenstein, 1997, have this labelled as a tracheal dendritic neuron ‘ltd’ - but analysis in Grueber et al., 2002, shows this to be a class III da neuron. The name ltd is also sometimes used as a synonym for istd, an unrelated tracheal dendritic neuron found near the anterior segment boundary of A1-7.

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abdominal posterior ventral multidendritic neuron vdap [FBbt_00002525]

Class I dendritic arborizing neuron of larval segments A1-7. Its cell body is located in the ventral cluster of sense organs and is the most posteriorly located of the multidendritic neurons found in these segments. It is a proprioceptor neuron (Heckscher et al., 2015). It fasciculates in branch c of the abdominal segmental nerve, SNc (Campos-Ortega and Hartenstein, 1997). It has strong outputs to Jaam2 (Heckscher et al., 2015). It does not persist into the adult stage (Shimono et al., 2009). Campos Ortega and Hartenstein (1997) state in one place that this neuron fasciculates with SNc and elsewhere that it fasciculates with SNa. It seems unlikely to do both, so have gone with SNc on the basis of the relevant figures. The number of identified output synapses in A1 to Jaam2 was 32/21 (L/R) (Heckscher et al., 2015).

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abdominal v'es2 neuron [FBbt_00002508]

Sensory neuron of v’es2. Fasciculates in branch a of the segmental nerve, SNa (Campos-Ortega and Hartenstein, 1997). Disambiguation: Campos-Ortega and Hartenstein, 1997, name v’es2 as innervating papilla vp5. Due to possible confusion with synonyms of other PNS members (such as vp4a which has the synonym of vc5), we have adopted the terminology used by FlyPNS (FlyPNS:PNSdescription.html).

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abdominal ventral bipolar neuron vbp [FBbt_00002589]

Bipolar multidendritic neuron in the ventral sensory cluster of larval abdominal segments 1-7. It emits two dendritic branches along the anterior posterior axis. It is a proprioceptor neuron (Heckscher et al., 2015). It has strong outputs to the A08e3 local neuron, Jaam2 and A02b (Heckscher et al., 2015; Schneider-Mizell et at ., 2016). The number of identified output synapses to Jaam2 was 32/21 (L/R) and to A08e3 was 15/9 (Heckscher et al., 2015). It is still not known if the pattern of connections in A1 is replicated in the other abdominal segments (Heckscher et al., 2015). The number of output synapses in Schneider-Mizell et al. (2016) was the estimated from the publication figures (number in brackets left/right where available; ipsi- and contralateral connections separated by comma): to A02b (15, 8/15, 10).

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abdominal ventral multidendritic neuron vtd2 [FBbt_00002581]

Tracheal associated multidendritic neuron of the ventral cluster of segments A1-7. Unlike other sensory neurons of the abdominal segments, it does not project its axon within the segment where it originates but project more anteriorly, crossing the midline in segment T3 and terminating either in T3 or in the subesophageal zone depending on its segment of origin (Qian et al., 2018).

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AC thermosensory neuron [FBbt_00007333]

Thermosensory neuron with its soma in the adult brain, anterior to the antennal lobe, that has no dendrites and expresses TrpA1 (Hamada et al., 2008; Shih and Chiang, 2011). It is activated by elevated temperature and is necessary for normal warmth-avoidance behavior (Hamada et al., 2008). It innervates the antennal lobe glomeruli VL2a and VL2p and the subesophageal zone, then projects obliquely towards the ipsilateral posterior superior lateral protocerebrum before branching to give extensive symmetrical arborizations in the superior medial protocerebrum in both hemispheres (Hamada et al., 2008; Shih and Chiang, 2011). It is serotonergic (Shih and Chiang, 2011). Neurotransmitter type was assessed by immunostaining with 5-HT (Shih and Chiang, 2011).

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adult abdominal dorsal multidendritic neuron ddaE [FBbt_00048433]

Mechanosensory multidendritic neuron that innervates the adult abdomen, extending dendrites under the dorsal body wall (tergite). It is remodeled from the larval ddaE neuron of the corresponding segment (Williams and Truman, 2004). It has many more terminals than its larval equivalent (Shimono et al., 2009). It undergoes programmed cell death within one week after eclosion (Shimono et al., 2009).

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adult hygrosensory neuron Ir40a [FBbt_00110990]

Adult hygrosensory neuron that expresses the humidity-sensing Ionotropic receptor (Ir) 40a, and the co-receptors Ir93a and Ir25a, and responds to dry air (Silbering et al., 2011; Enjin et al, 2016; Knecht et al., 2016). There are a few different subtypes, innervating either the antennal lobe VP1d or VP4 glomeruli (Silbering et al., 2011; Marin et al., 2020) and having dendrites in either the basiconic sensilla of chamber I or the blunt-tipped sensilla of chamber II of the sacculus (pore-less sensilla) (Enjin et al., 2016; Marin et al., 2020).

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adult hygrosensory neuron Ir40a VP1d [FBbt_00047226]

Adult hygrosensory neuron that expresses the humidity-sensing Ionotropic receptor (Ir) 40a, and the co-receptors Ir93a and Ir25a and innervates the antennal lobe glomerulus VP1d (Enjin et al, 2016; Knecht et al., 2016; Marin et al., 2020). It receives sensory input in the blunt-tipped sensilla of chamber II of the sacculus and its projections remain strictly ipsilateral (Silbering et al., 2011; Marin et al., 2020). It is activated by dry air (to a lesser extent than the VP4 Ir40a neurons) (Knecht et al., 2016) and by large decreases in temperature (Enjin et al., 2016), which may collectively correspond to detection of evaporative cooling (Marin et al., 2020). There are around 7-9 of these cells per hemisphere (Marin et al., 2020).

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adult hygrosensory neuron Ir40a VP4 [FBbt_00047225]

Adult hygrosensory neuron that expresses the humidity-sensing Ionotropic receptor (Ir) 40a, and the co-receptors Ir93a and Ir25a and innervates the antennal lobe glomerulus VP4 bilaterally (Enjin et al, 2016; Knecht et al., 2016; Marin et al., 2020). There are two subtypes that transduce signals from the basiconic sensilla of chamber I or the blunt-tipped sensilla of chamber II (pore-less sensilla) of the sacculus (Enjin et al., 2016; Marin et al., 2020). Its activity is increased by dry air and decreased by humid air (Knecht et al., 2016; Enjin et al., 2016).

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adult hygrosensory neuron Ir68a [FBbt_00047222]

Ipsilateral hygrosensory neuron that expresses the Ionotropic receptor (Ir) 68a as well as the co-receptor Ir93a (Frank et al., 2017; Knecht et al., 2017). There are two subtypes, with dendrites in chamber I or II of the sacculus, projecting to glomeruli VP1m or VP5, respectively (Frank et al., 2017; Marin et al., 2020). FBrf0235932 and FBrf0236232 have contradictory results regarding expression of Ir25a in these cells.

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adult hygrosensory neuron Ir68a VP5 [FBbt_00049659]

Adult hygrosensory neuron Ir68a that innervates antennal lobe glomerulus VP5 and innervates a sensillum housed in chamber II of the sacculus (Frank et al., 2017; Knecht et al., 2017; Marin et al., 2020). In VP5, it synapses to antennal lobe projection neuron VP1m+VP5 (Frank et al., 2017). There are around 7-9 of these cells per hemisphere (Marin et al., 2020). FBrf0235932 and FBrf0236232 have contradictory results regarding expression of Ir25a in these cells. Synapsing with PN in VP5 shown by GRASP (Frank et al., 2017).

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adult leg stretch receptor neuron [FBbt_00048300]

Mechanosensory neuron that has a dendrite at a leg joint and is activated by movement of the joint (Desai et al., 2014). There is one such neuron for each femur-tibia and tibia-tarsus joint in all legs (Desai et al., 2014), and one for the coxa-trochanter joint at least in the prothoracic leg (Kuan et al., 2020). Their dendritic tips are not associated with cuticular structures, scolopales or musculature (Desai et al., 2014). Close to its tip, the dendrite branches towards the lateral aspect of the joint; the cell body is found near these dendritic terminals. (Desai et al., 2014). Its axons terminate in the leg neuropil (Tsubouchi et al., 2017).

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adult mechanosensory neuron of the hypocerebral ganglion [FBbt_00058026]

A mechanosensory neuron found in the adult hypocerebral ganglion. There are approximately 6 of these neurons in the hypocerebral ganglion. They express the mechanosensitive ion channel Piezo and innervate the anterior midgut and the crop. They respond to crop-distending stimuli and control feeding behavior. Their ascending axons contribute to the recurrent nerve (Min et al., 2021).

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adult olfactory receptor neuron Gr21a/63a [FBbt_00067064]

Ipsilateral odorant receptor neuron that expresses Gr21a (FBgn0041250) (Couto et al., 2005) and Gr63a (FBgn0035468) (Kwon et al., 2007). It innervates antennal lobe glomerulus V. Unlike many other antennal olfactory receptor neurons, it does not send an axon branch through the antennal commissure to innervate the equivalent contralateral glomerulus. Suh et al., (2004) and Kwon et al., (2007) identify this neuron as being sensitive to CO2 levels. Its dendrite transduces signals from antennal basiconic sensillum ab1. The numbers of these neurons have been estimated to 39.8 in females and 30 in males (Grabe et al., 2016). Gr21a and Gr63a are only found in one ORN and they are co-expressed (Kwon et al., 2006).

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adult olfactory receptor neuron Ir31a [FBbt_00110010]

Bilateral olfactory receptor neuron that expresses the Ionotropic receptor (Ir) 31a (FBgn0051718) and the co-receptor Ir8a (FBgn0052704). Its axon branches, with one branch innervating the ipsilateral antennal lobe glomerulus VL2 posterior compartment and the other fasciculating with the antennal commissure and innervating the contralateral antennal lobe glomerulus VL2 posterior compartment (Silbering et al., 2011). Its dendrite transduces signals from the antennal coeloconic sensillum ac1 (Benton et al., 2009). This neuron was indirectly shown to be olfactory by electrophysiological recordings of a single coeloconic sensillum (Benton et al., 2009).

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adult olfactory receptor neuron Ir41a [FBbt_00110015]

Bilateral olfactory receptor neuron that expresses the Ionotropic receptor (Ir) 41a (FBgn0040849) and the co-receptors 25a (FBgn0031634) and 76b (FBgn0036937). It innervates the antennal lobe glomeruli VC5. Its dendrite transduces signals from the antennal coeloconic sensillum ac2 (Benton et al., 2009). There are approximately 15 of these cells in females and 12 in males, on each side (Grabe et al., 2016). This neuron was indirectly shown to be olfactory by electrophysiological recordings of a single coeloconic sensillum (Benton et al., 2009).

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adult olfactory receptor neuron Ir64a [FBbt_00110019]

Bilateral olfactory receptor neuron that expresses the ionotropic glutamate receptor (Ir) 64a (FBgn0035604) and the co-receptor Ir8a (FBgn0052704). Its axon branches, with one branch innervating an ipsilateral antennal lobe glomerulus and the other fasciculating with the antennal commissure and innervating the corresponding contralateral lobe glomerulus. Two subtypes are identified: one innervates the antennal lobe DC4 glomerulus and the other innervates the medial compartment of DP1 glomerulus. Its dendrite transduces signals from the grooved sensillum of chamber III of the sacculus (Shanbhag et al., 1995). This neuron was indirectly shown to be olfactory by recording calcium changes in the antennal lobe during an odorant-response assay using wildtype flies and mutants in which ORN Ir64a were silenced (Ai et al., 2010).

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adult olfactory receptor neuron Ir64a DC4 [FBbt_00111210]

Bilateral olfactory receptor neuron that expresses the ionotropic glutamate receptor (Ir) 64a (FBgn0035604) and the co-receptor Ir8a (FBgn0052704). Its axon branches, with one branch innervating the ipsilateral antennal lobe glomeruli DC4 and the other fasciculating with the antennal commissure and innervating the contralateral antennal lobe glomeruli DC4 (Ai et al., 2010; Silbering et al., 2011). Its dendrite transduces signals from the grooved sensillum 1 of the ventral compartment of chamber III of sacculus (Shanbhag et al., 1995). There are approximately 15 of these cells on each side (Ai et al., 2010).

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adult olfactory receptor neuron Ir64a DP1m [FBbt_00111212]

Bilateral olfactory receptor neuron that expresses the ionotropic glutamate receptor (Ir) 64a (FBgn0035604) and the co-receptor Ir8a (FBgn0052704). Its axon branches, with one branch innervating the ipsilateral antennal lobe glomeruli DP1m and the other fasciculating with the antennal commissure and innervating the contralateral antennal lobe glomeruli DP1m (Ai et al., 2010; Silbering et al., 2011). Its dendrite transduces signals from the grooved sensillum 2 of the dorsal compartment of chamber III of sacculus (Shanbhag et al., 1995). There are approximately 15 of these cells on each side (Ai et al., 2010).

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adult olfactory receptor neuron Ir75a [FBbt_00110013]

Bilateral olfactory receptor neuron that expresses the Ionotropic receptor (Ir) 75a (FBgn0036757) and the co-receptor Ir8a (FBgn0052704) and innervates the lateral compartment of the antennal lobe DP1 glomerulus (DP1l). Its axon branches, with one branch innervating the ipsilateral DP1l and the other fasciculating with the antennal commissure and innervating the contralateral DP1l (Silbering et al., 2011). Its dendrite transduces signals from the antennal coeloconic sensillum ac2 (Benton et al., 2009). The numbers of these neurons have been estimated to 15 in females and 12 in males (Grabe et al., 2016). This neuron was indirectly shown to be olfactory by electrophysiological recordings of a single coeloconic sensillum (Benton et al., 2009).

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adult olfactory receptor neuron Ir75a/b [FBbt_00110016]

Bilateral olfactory receptor neuron that expresses the Ionotropic receptors (Ir) 75a (FBgn0036757) and 75b (FBgn0261402) and the co-receptor Ir8a (FBgn0052704) (Silbering et al., 2011). Its axon branches, with one branch innervating the ipsilateral antennal lobe glomerulus DL2 and the other fasciculating with the antennal commissure and innervating the contralateral antennal lobe glomerulus DL2. Its dendrite transduces signals from the antennal coeloconic sensillum ac3. It is distinguishable from the other ORN ac3 (Ir76b/Or35a) by its odor response profile. A subset of these neurons also expresses Ir75c (FBgn0261401) (Benton et al., 2009). This neuron was directly shown to be olfactory by electrophysiological recordings of a single neuron (Benton et al., 2009).

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adult olfactory receptor neuron Ir75c [FBbt_00051495]

Olfactory receptor neuron that expresses the Ionotropic receptor 75c (Prieto-Godino et al., 2017). Its dendrite transduces signals from the antennal coeloconic sensillum ac3 type II and its axonal terminals are found in glomerulus DL2v (Prieto-Godino et al., 2017), bilaterally (Schlegel et al., 2021). It has a stronger response to propionic acid and a weaker response to butyric acid, compared to Ir75b neurons (Prieto-Godino et al., 2017). There are approximately 12 of these cells per antenna (Schlegel et al., 2021). Prieto-Godino et al. (2017) showed that these cells are distinct from the Ir75b cells and that previous belief of co-expression was due to transcriptional run off from Ir75c.

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adult olfactory receptor neuron Ir75d [FBbt_00047054]

Ipsilateral olfactory receptor neuron that expresses the Ionotropic receptor (Ir) 75d (FBgn0036829). There are three subclasses, which all innervate the antennal lobe glomerulus VL1, with dendrites transducing signals from the different antennal coeloconic sensilla (Silbering et al., 2011). This neuron was indirectly shown to be olfactory by electrophysiological recordings of a single coeloconic sensillum (Benton et al., 2009).

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adult olfactory receptor neuron Ir75d ac1 [FBbt_00110011]

Ipsilateral olfactory receptor neuron that expresses the Ionotropic receptor (Ir) 75d (FBgn0036829) and the co-receptor Ir25a (FBgn0031634). It innervates the antennal lobe glomerulus VL1 (Silbering et al., 2011). Its dendrite transduces signals from the antennal coeloconic sensillum ac1 (Silbering et al., 2011). The numbers of these neurons have been estimated to 15 in females and 16 in males (Grabe et al., 2016). This neuron was indirectly shown to be olfactory by electrophysiological recordings of a single coeloconic sensillum (Benton et al., 2009). This ORN responds strongly to changes in humidity (Yao et al., 2005).

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adult olfactory receptor neuron Ir75d ac2 [FBbt_00110014]

Ipsilateral olfactory receptor neuron that expresses the Ionotropic receptor (Ir) 75d (FBgn0036829) and the co-receptor Ir25a (FBgn0031634). It innervates the antennal lobe glomerulus VL1 (Silbering et al., 2011). Its dendrite transduces signals from the antennal coeloconic sensillum ac2 (Silbering et al., 2011). This neuron was indirectly shown to be olfactory by electrophysiological recordings of a single coeloconic sensillum (Benton et al., 2009). This ORN responds strongly to changes in humidity (Yao et al., 2005).

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adult olfactory receptor neuron Ir75d ac4 [FBbt_00110017]

Ipsilateral olfactory receptor neuron that expresses the ionotropic glutamate receptors (Ir) 75d (FBgn0036829) and the co-receptor Ir25a (FBgn0031634). It innervates the antennal lobe glomerulus VL1 (Silbering et al., 2011). Its dendrite transduces signals from the antennal coeloconic sensillum ac4 (Silbering et al., 2011). This neuron was indirectly shown to be olfactory by electrophysiological recordings of a single coeloconic sensillum (Benton et al., 2009).

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adult olfactory receptor neuron Ir76a [FBbt_00110018]

Bilateral olfactory receptor neuron that expresses the ionotropic glutamate receptors (Ir) 76a (FBgn0260874) and the co-receptors Ir76b (FBgn0036937) and Ir25a (FBgn0031634). Its axon branches, with one branch innervating the ipsilateral antennal lobe glomerulus VM4 and the other fasciculating with the antennal commissure and innervating the contralateral antennal lobe glomerulus VM4 (Silbering et al., 2011). Its dendrite transduces signals from the antennal coeloconic sensillum ac4 (Benton et al., 2009). There are approximately 30 of these cells in females and 24 in males, on each side (Grabe et al., 2016). This neuron was indirectly shown to be olfactory by electrophysiological recordings of a single coeloconic sensillum (Benton et al., 2009).

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adult olfactory receptor neuron Ir84a [FBbt_00110007]

Bilateral olfactory receptor neuron that expresses the Ionotropic receptor (Ir) 84a (FBgn0037501) and the co-receptor Ir8a (FBgn0052704). Its axon branches, with one branch innervating the ipsilateral antennal lobe glomerulus VL2a and the other fasciculating with the antennal commissure and innervating the contralateral antennal lobe glomerulus VL2a (Grosjean et al., 2011; Silbering et al., 2011). Its dendrite transduces signals from the antennal coeloconic sensillum ac4 (Benton et al., 2009). The numbers of these neurons have been estimated to 29.5 in females and 24 in males (Grabe et al., 2016). This neuron was indirectly shown to be olfactory by electrophysiological recordings of a single coeloconic sensillum (Grosjean et al., 2011).

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adult olfactory receptor neuron Ir92a [FBbt_00110012]

Bilateral olfactory receptor neuron that expresses the Ionotropic receptor (Ir) 92a (FBgn0038789) and the co-receptors Ir25a (FBgn0031634) and Ir76b (FBgn0036937). Its axon branches, with one branch innervating the ipsilateral antennal lobe glomerulus VM1 and the other fasciculating with the antennal commissure and innervating the contralateral antennal lobe glomerulus VM1 compartment (Silbering et al., 2011). Its dendrite transduces signals from the antennal coeloconic sensillum ac1 (Benton et al., 2009). There are approximately 15 of these cells in females and 16 in males, on each side (Grabe et al., 2016). This neuron was indirectly shown to be olfactory by electrophysiological recordings of a single coeloconic sensillum (Benton et al., 2009).

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adult olfactory receptor neuron Or10a [FBbt_00067013]

Bilateral olfactory receptor neuron (ORN) that expresses Or10a (FBgn0030298) and the gustatory receptor Gr10a (FBgn0045502) (Fishilevich and Vosshall, 2005). Its axon branches, with one branch innervating the ipsilateral antennal lobe glomerulus DL1 and the other fasciculating with the antennal commissure and innervating the contralateral antennal lobe glomerulus DL1. Its dendrite transduces signals from antennal basiconic sensillum ab1. There are approximately 38 of these cells in females and 24 in males, on each side (Grabe et al., 2016).

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adult olfactory receptor neuron Or13a [FBbt_00067016]

Bilateral olfactory receptor neuron (ORN) that expresses Or13a (FBgn0030715). Its axon branches, with one branch innervating the ipsilateral antennal lobe glomerulus DC2 and the other fasciculating with the antennal commissure and innervating the contralateral antennal lobe glomerulus DC2. Its dendrite transduces signals from antennal basiconic sensillum ab6. There are approximately 15 of these cells in females and 11 in males, on each side (Grabe et al., 2016).

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adult olfactory receptor neuron Or19 [FBbt_00067018]

Bilateral olfactory receptor neuron (ORN) that expresses Or19a (FBgn0041626) and Or19b (FBgn0062565). Its axon branches, with one branch innervating the ipsilateral antennal lobe glomerulus DC1 and the other fasciculating with the antennal commissure and innervating the contralateral antennal lobe glomerulus DC1. Its dendrite transduces signals from antennal intermediate sensillum ai3. The numbers of these neurons have been estimated to 27 in females and 22 in males (Grabe et al., 2016).

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adult olfactory receptor neuron Or22 [FBbt_00067025]

Bilateral olfactory receptor neuron (ORN) that expresses Or22a (FBgn0026398) and Or22b (FBgn0026397). Its axon branches, with one branch innervating the ipsilateral antennal lobe glomerulus DM2 and the other fasciculating with the antennal commissure and innervating the contralateral antennal lobe glomerulus DM2. Its dendrite transduces signals from antennal basiconic sensillum ab3. There are approximately 8 of these cells on each side (Grabe et al., 2016).

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