Nomenclature

    Many nomenclatures have been used to describe larval abdominal sensory cells and organs, reflecting different characteristics of the sensory cells (position, dendritic arborization, number of innervating neurons ...). The first studies have described only a few sensory organs (Hertweck, 1931, Kankel et al., 1980), then detailed descriptions provided names for most sensory organs and neurons. Most changes in nomenclature have concerned the multidendritic neurons. They were first named as groups of multidendritic neurons (Bodmer et al., 1989), and Merritt and Whitington were the first to name the multidendritic neurons individually, based on their position (Merritt and Whitington, 1995). Later, multidendritic neurons were named based on their dendritic arborization (Sweeney et al., 2002, Grueber et al., 2002). Note that even if they use the same denominations, the position-based and the morphology-based nomenclatures show some discrepancies (for example, vdaD corresponds to vdaA and reciprocally, see below). Then, lineage studies shed light on the origin of a few ventral multidendritic neurons (Orgogozo et al., 2002) but since their identity (ie late morphologies and positions) was not investigated, they were given new names.
    Please note also a recent discordance relating to the ddaD and ddaF neurons. We have favored here the ddaD/ddaF nomenclature from Grueber et al., 2002 because this nomenclature describes all the da neurons. The ddaD neuron can be distinguished from the ddaF neurons using the markers Abrupt (in ddaD) and Cut (in ddaF). In a few recent papers, the neuron named ddaD thus corresponds to ddaF, and reciprocally (Sweeney et al., 2002, Li et al., 2004, in Grueber et al., 2002 the usual position of both neurons has also been inverted).
    Our current identification of PNS neurons has been based primarily on molecular markers and morphology.

		Hertweck, 1931	Kankel et al., 1980	Dambly-Chaudiere and Ghysen, 1986 (names es organs)	Ghysen et al., 1986 (names es and ch neurons)	Bodmer et al., 1989 (names es, ch and md neurons)	Merritt and Whitington, 1995 (names es, ch and md neurons)	Campos-Ortega  and Hartenstein, 1997 (names sensory organs)	Grueber et al., 2002 (names md da neurons)	other (Only the first paper using this other nomenclature is indicated)
external sensory (es) organs		-	-	p1	vesA	vesA	vesA	vp1	-	vc1 (Hartenstein, 1986)
		-	-	p2	vesB	vesB	vesB	vp2	-	vc2 (Hartenstein, 1986)
		-	-	p3	vesC	vesC	vesC	vp3	-	vc3 (Hartenstein, 1986)
		-	-	p4	v'esA	v'esA	v'esA	vp4	-	vc4 (Hartenstein, 1986)
		-	-	p5	v'esB	v'esB	v'esB	vp4a	-	vc4a (Hartenstein, 1986)
		-	-	p6	v'es2	v'es2	v'es2	vp5	-	vc5 (Hartenstein, 1986)
		b	sensory hair C	h1	lesA	lesA	lesA	lh2	-	-
		-	-	p7	lesB	lesB	lesB	lp2, lc1	-	-
		H	sensory hair C	h2	lesC	lesC	lesC	lh1	-	-
		b+st	sensory hair F	h4	desB	des2	desA2	dh2	-	des2 (Dambly-Chaudiere and Ghysen, 1987)
				h3	desA	desB	desB	dh1	-	-
		s	-	p8	desC	desC	desC	dp1, dc1	-	-
		b	-	p9	desD	desD	desD	dp2, dc2	-	-
chordotonal (ch) organs		-	-	-	vchA	vchA	vchA	vch1	-	-
		-	-	-	vchB	vchB	vchB	vch2	-	-
		-	-	-	lch5	lch5	lch5	lch5	-	-
		-	-	-	v'ch1	v'ch1	v'ch1	lch1	-	-
multidendritic (md) neurons		-	-	-	-	vmd5	vbd	vbd	-	vmd3 (Orgogozo et al., 2002)
		-	-	-	-		vdaC	vdaA-D	vdaC	vmd2 (Orgogozo et al., 2002)
		-	-	-	-		vdaA		vdaD	vmd1 (Orgogozo et al., 2002)
		-	-	-	-		vdaD		vdaA	vmd4 (Orgogozo et al., 2002)
		-	-	-	-		vdaB		vdaB	vmd1a (Orgogozo et al., 2002)
		-	-	-	-	vpda	vpda	vdap	vpda	-
		-	-	-	-	v'ada	v'ada	vdaa	v'ada	vmd4a (Orgogozo et al., 2002)
		-	-	-	-	v'td2	v'td2	vtd1/2	-	-
		-	-	-	-				-
		-	-	-	-	v'pda	v'pda	v'dap	v'pda	-
		-	-	-	-	ldaA	ldaA	lda	ldaA	-
		-	-	-	-	lbd	-	isbp	-	ldb, lbd (Brewster et al., 2001)
		-	-	-	-	ltd	ltd	istd	-	-
		-	-	-	-	ldaB	ldaB	ltd	ldaB	-
		-	-	-	-	dbd	dbd	dbp	-	-
		-	-	-	-	dmd6	ddaA	ddaA-E	ddaA	the ddaA-B-C-D-E-F cluster has also been called dmd5 (Jarman et al., 1993)
		-	-	-	-		ddaB or ddaC?		ddaB
		-	-	-	-		ddaB?		ddaC
		-	-	-	-		-		ddaD	ddaF (Sweeney et al., 2002)
		-	-	-	-		ddaD?		ddaE
		-	-	-	-		ddaD?		ddaF	ddaD (Sweeney et al., 2002)
		-	-	-	-	-	ddaE	-	-	dda1 (Brewster et al., 2001) dmd1 (Grueber et al., 2003)

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References

Bodmer, R., Carretto, R. and Jan, Y.N., 1989. Neurogenesis of the peripheral nervous system in Drosophila embryos: DNA replication patterns and cell lineages. Neuron 3, pp. 21-32. Medline

Brewster, R., Hardiman, K., Deo, M., Khan, S. and Bodmer, R., 2001. The selector gene cut represses a neural cell fate that is specified independently of the Achaete-Scute-Complex and atonal. Mech Dev. 105, pp. 57-68. Medline

Campos-Ortega, J.-A. and Hartenstein, V. 1997. The embryonic development of Drosophila melanogaster. Berlin/Heidelberg/New-York/Tokyo.: Springer-Verlag.

Dambly-Chaudiere, C. and Ghysen, A. 1986. The sense organs in the Drosophila larva and their relation to embryonic pattern of sensory neurons. Roux's Arch. Dev. Biol. 195, pp. 222-228.

Dambly-Chaudiere, C. and Ghysen, A. 1987. Independent subpatterns of sense organs require independent genes of the achaete-scute complex in Drosophila larvae. Genes & Development 1, pp. 297-306.

Ghysen, A., Dambly-Chaudiere, C., Aceves, E., Jan, L. Y. and Jan, Y. N. 1986. Sensory neurons and peripheral pathways in Drosophila embryos. Roux's Arch. Dev. Biol. 195, pp. 281-289.

Grueber, W.B., Jan, L.Y. and Jan, Y.N., 2002. Tiling of the Drosophila epidermis by multidendritic sensory neurons. Development 129, pp. 2867–2878. Medline

Grueber, W. B., Jan, L. Y. and Jan, Y. N. 2003. Different levels of the homeodomain protein cut regulate distinct dendrite branching patterns of Drosophila multidendritic neurons. Cell 112, pp. 805-18. Medline

Hartenstein, V. and Campos-Ortega, J. A. 1986. The peripheral nervous system of mutants of early neurogenesis in Drosophila melanogaster. Roux's Arch. Dev. Biol. 195, pp. 210-221.

Hertweck, H. 1931. Anatomie und Variabilität des nervensystems und der Sinnesorgane von Drosophila melanogaster (Meigen). Z wiss Zool 139, pp. 559-663.

Jarman, A. P., Grau, Y., Jan, L. Y. and Jan, Y. N. 1993. atonal is a proneural gene that directs chordotonal organ formation in the Drosophila peripheral nervous system. Cell 73, pp. 1307-1321. Medline

Kankel, D. R., Ferrus, A., Garen, S. H., Harte, P. J. and Lewis, P., 1980. The structure and development of the nervous system. In: The Genetics of Drosophila, vol. 2d, ed. M. Ashburner and T.R. F. Wright, pp. 295-368. London. Academic Press.

Li W, Wang F, Menut L, Gao FB. 2004. BTB/POZ-Zinc Finger Protein Abrupt Suppresses Dendritic Branching in a Neuronal Subtype-Specific and Dosage-Dependent Manner. Neuron 43, pp. 823-34. Medline

Merritt, D. J. and Whitington, P. M. 1995. Central projections of sensory neurons in the Drosophila embryo correlate with sensory modality, soma position, and proneural gene function. J Neurosci 15, pp. 1755-67. Medline

Orgogozo, V., Schweisguth, F. and Bellaiche, Y., 2002. Binary cell death decision regulated by unequal partitioning of Numb at mitosis. Development 129, pp. 4677-4684. Medline

Sweeney NT, Li W, Gao FB. 2002. Genetic manipulation of single neurons in vivo reveals specific roles of flamingo in neuronal morphogenesis. Dev Biol 247, pp. 76-88. Medline

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