multi-tissue structure
 |__foregut________________________
ectodermal derivative              |
 |__anterior ectoderm derivative___|
gut                                |
 |__embryonic/larval gut___________|
gut section                        |
 |__foregut________________________|
embryonic/larval alimentary canal  |
 |__embryonic/larval gut___________|
                                   embryonic/larval foregut  721 rec.
                                    |__embryonic/larval dorsal pouch 36 rec.
                                    |   |__anterior pharyngeal organ 4 rec.
                                    |   |__dorsal fold 29 rec.
                                    |   |__inner layer of dorsal pouch
                                    |   |__lateropharyngeal organ 4 rec.
                                    |   |__outer layer of dorsal pouch
                                    |__embryonic/larval esophagus 57 rec.
                                    |   |__embryonic/larval esophageal muscle cell
                                    |__embryonic/larval foregut epithelium
                                    |   |__embryonic/larval proventriculus inner layer
                                    |__embryonic/larval foregut sensillum 9 rec.
                                    |   |__anteroventral group sensillum(+)
                                    |   |__buccal tree
                                    |   |__dorsal pharyngeal sensillum(+) 4 rec.
                                    |   |__laterohypopharyngeal organ 2 rec.
                                    |   |__papilla organ 4 rec.
                                    |   |__posteriolateral sensillum V4
                                    |__embryonic/larval pharynx 237 rec.
                                    |   |__anteroventral group sensillum(+)
                                    |   |__dorsal fold lateral sensillum
                                    |   |__dorsal fold medial sensillum(+)
                                    |   |__dorsal pharyngeal sense organ(+) 14 rec.
                                    |   |__embryonic/larval cibarium 1 rec.
                                    |   |__embryonic/larval epipharynx(+) 1 rec.
                                    |   |__embryonic/larval hypopharynx 4 rec.
                                    |   |__laterohypopharyngeal organ 2 rec.
                                    |   |__pharyngeal bar 4 rec.
                                    |   |__posteriolateral sensillum V4
                                    |   |__posterior pharyngeal sense organ 15 rec.
                                    |__foregut imaginal ring 34 rec.
                                    |   |__embryonic precursor of adult foregut 14 rec.
                                    |__hypopharyngeal lobe 18 rec.
                                    |__larval foregut atrium 238 rec.
                                    |   |__papilla organ 4 rec.
                                    |__larval foregut epithelial cell