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. 2022 Jan 28;13(2):142. doi: 10.3390/insects13020142

Table 3.

Ionotropic receptors (Irs) in Drosophila melanogaster (adult).

Antenna LTB LTP LSO VCSO DCSO Legs Wings Abdomen
Ir8a Ir7a Ir25a Ir10a Ir7a Ir10a Ir7a Ir7a Ir7a
Ir21a Ir7c Ir56d Ir20a Ir11a Ir20a Ir7c Ir7b Ir7c
Ir25a Ir11a Ir76b Ir25a Ir20a Ir25a Ir11a Ir7c Ir10a
Ir31a Ir25a Ir56a Ir25a Ir76b Ir20a Ir10a Ir11a
Ir40a Ir47a Ir60b Ir56a Ir100a Ir25a Ir25a Ir20a
Ir41a Ir56a Ir60c Ir76b Ir47a Ir52a Ir25a
Ir64a Ir56b Ir60d Ir94a Ir52a Ir52b Ir56a
Ir68a Ir56d Ir67c Ir94b Ir52b Ir52c Ir76b
Ir75a Ir60c Ir76b Ir94c Ir52c Ir56a
Ir75b Ir60d Ir94a Ir94h Ir52d Ir56d
Ir75c Ir76b Ir94e Ir56a Ir60c
Ir75d Ir94b Ir94f Ir56d Ir76b
Ir76a Ir94e Ir94h Ir60c Ir94e
Ir76b Ir100a Ir67a
Ir84a Ir76b
Ir92a Ir94e
Ir93a Ir94h

Outline of distribution of ionotropic receptors (Irs) in adult flies. (Adapted from [91,97]). LTB—Labellar taste bristles, LTP—Labellar taste pegs, LSO—Labral sense organ, VCSO—Ventral cibarial sense organ, DCSO—Dorsal cibarial sense organ.