developing material anatomical entity__
somatic cell___________________________|
                                       somatic precursor cell
                                        |__peripheral sensory precursor cell  550 rec.
                                            |__chordotonal organ precursor cell 56 rec.
                                            |   |__chordotonal organ sensory mother cell(+) 17 rec.
                                            |   |__dorsal abdominal chordotonal organ precursor cell
                                            |   |__dorsal thoracic chordotonal organ precursor cell
                                            |   |__embryonic immature chordotonal neuron(+) 2 rec.
                                            |   |__lateral abdominal chordotonal organ precursor cell(+) 18 rec.
                                            |   |__ventral group abdominal chordotonal organ precursor cell(+)
                                            |   |__ventral group thoracic chordotonal organ precursor cell
                                            |__external sensory organ precursor cell 266 rec.
                                            |   |__antennal olfactory receptor neuron precursor Naa
                                            |   |__antennal olfactory receptor neuron precursor Nab
                                            |   |__antennal olfactory receptor neuron precursor Nba
                                            |   |__antennal olfactory receptor neuron precursor Nbb
                                            |   |__dorsal abdominal external sensory organ precursor cell
                                            |   |__dorsal thoracic external sensory organ precursor cell
                                            |   |__external sensory organ precursor cell I(+) 48 rec.
                                            |   |__external sensory organ precursor cell IIa 79 rec.
                                            |   |__external sensory organ precursor cell IIb 83 rec.
                                            |   |__external sensory organ precursor cell IIc 3 rec.
                                            |   |__external sensory organ precursor cell IIIb(+) 9 rec.
                                            |   |__lateral abdominal external sensory organ precursor cell
                                            |   |__lateral thoracic external sensory organ precursor cell
                                            |   |__ventral group abdominal external sensory organ precursor cell
                                            |   |__ventral group thoracic external sensory organ precursor cell
                                            |__multidendritic neuron precursor cell 10 rec.
                                            |   |__bipolar dendrite neuron precursor cell(+) 3 rec.
                                            |   |__dendritic arborizing neuron precursor cell(+)
                                            |   |__trachea-associated neuron precursor cell(+) 1 rec.
                                            |__sensory mother cell 338 rec.
                                                |__chordotonal organ sensory mother cell(+) 17 rec.
                                                |__external sensory organ precursor cell I(+) 48 rec.