embryonic/larval nervous system
 |__embryonic/larval central nervous system__
central nervous system                       |
 |__embryonic/larval central nervous system__|
commissure                                   |
 |__symmetrical commissure___________________|
                                             larval posterior commissure  122 rec.
                                              |__larval abdominal posterior commissure 4 rec.
                                              |   |__larval abdominal 1 posterior commissure(+) 4 rec.
                                              |   |__larval abdominal 2 posterior commissure 4 rec.
                                              |   |__larval abdominal 3 posterior commissure 4 rec.
                                              |   |__larval abdominal 4 posterior commissure 4 rec.
                                              |   |__larval abdominal 5 posterior commissure 4 rec.
                                              |   |__larval abdominal 6 posterior commissure 4 rec.
                                              |   |__larval abdominal 7 posterior commissure 4 rec.
                                              |   |__larval abdominal 8 posterior commissure 4 rec.
                                              |__larval labial posterior commissure
                                              |   |__larval labial posterior dorsal commissure
                                              |   |__larval labial posterior intermediate commissure
                                              |__larval mandibular posterior commissure
                                              |__larval maxillary posterior commissure
                                              |   |__larval maxillary posterior dorsal commissure
                                              |   |__larval maxillary posterior intermediate commissure
                                              |__larval posterior dorsal commissure
                                              |   |__larval abdominal 1 posterior dorsal commissure
                                              |   |__larval labial posterior dorsal commissure
                                              |   |__larval maxillary posterior dorsal commissure
                                              |   |__larval mesothoracic posterior dorsal commissure
                                              |   |__larval metathoracic posterior dorsal commissure
                                              |   |__larval prothoracic posterior dorsal commissure
                                              |__larval posterior intermediate commissure
                                              |   |__larval abdominal 1 posterior intermediate commissure
                                              |   |__larval labial posterior intermediate commissure
                                              |   |__larval maxillary posterior intermediate commissure
                                              |   |__larval mesothoracic posterior intermediate commissure
                                              |   |__larval metathoracic posterior intermediate commissure
                                              |   |__larval prothoracic posterior intermediate commissure
                                              |__larval thoracic posterior commissure
                                                  |__larval thoracic 1 posterior commissure(+)
                                                  |__larval thoracic 2 posterior commissure(+)
                                                  |__larval thoracic 3 posterior commissure(+)