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Prof. Ryuichiro Machida

2006年ドレスデンミーティングにて 公開講座にて、スウィーピングの指導 ヒトツモンイシノミ

Contact:

Tel : +81-268-74-2002
Fax : +81-268-74-2016
Mail: machida@sugadaira.tsukuba.ac.jp
Study Fiedld: Animal Phylogeny
Study Themes: Comparative Embryological Studies of Arthropods, with Special Reference to the Origin, Phylogeny in Higher Levels and Groundplan of Insects; Taxonomical, Biogeographical Studies and Faunal Survey of Insects

きょうりゅう Focus of Study    
いしのみ Contributions in English    

List of courses offered 画・町田龍一郎





Focus of Study

 Arthropods, which account for more than 75% of animal species, are the most diverse and prosperous animals on the planet Earth. We are studying the arthropods, with special reference to insects, in light of comparative embryology and morphology, aiming at the elucidation of their origin, phylogeny in higher levels, the reconstruction their groundplan and the illustration of their evolutionary paths.

We are also making a faunal survey of animals around Sugadaira and taxonomical and biological studies of insects.


Archaeognathan egg in the initial stage of holoblastic cleavage



Early embryo of a centipede









Contribution in English



1. Machida R. (1980) A new species of the genus Pedetontus from Japan (Insecta, Thysanura). Annotationes Zoologicae Japonenses, 53: 220-225.

2. Machida, R. (1981) External features of embryonic development of a jumping bristletail Pedetontus unimaculatus Machida (Insecta, Thysanura, Machilidae). Journal of Morphology, 168: 339-355.

3. Machida, R. and H. Ando (1981) Formation of midgut epithelium in the jumping bristletail Pedetontus unimaculatus Machida (Archaeognatha: Machilidae). International Journal of Insect Morphology and Embryology, 10: 297-308.

4. Machida, R. (1985) Pedetontus unimaculatus Machida (Microcoryphia, Machilidae) found on Yaku-shima Island. Kontyu, 53: 247-248.

5. Machida, R. (1985) A redescription of Pedetontus okajimae Silvestri, 1943 (Microcoryphia, Machilidae). Kontyu, 53: 527-535.

6. Machida, R. and H. Ando (1985) Blastodermic cuticles of the jumping bristletail, Pedetontus unimaculatus (Microcoryphia, Machilidae). In: "Recent Advances in Insect Embryology in Japan (H. Ando & K. Miya eds.)", pp. 131-137. Arthropodan Embryological Society of Japan, Tsukuba.

7. Ando, H. and R. Machida (1987) Relationship between Notoptera and Dermaptera from the embryological standpoint. In: "Recent Advances in Insect Embryology in Japan and Poland (H. Ando & Cz. Jura eds.)", pp. 151-157. Arthropodan Embryological Society of Japan, Tsukuba.

8. Machida, R., H. Ando and T. Nagashima (1989) Cleavage of a jumping bristletail, Pedetontus unimaculatus Machida (Hexapaoda, Microcoryphia, Machilidae). Proceedings of Arthropodan Embryological Society of Japan, 24: 17-18.

9. Numajiri, R., T. Kishimoto and R. Machida (1989) A list of aquatic insects from two streams with different acidities in Sugadaira. Bulletin of the Sugadaira Montane Research Center University of Tsukuba, 10: 25-29.

10. Machida, R., T. Nagashima and H. Ando (1990) The early embryonic development of the jumping bristletail Pedetontus unimaculatus Machida (Hexapoda, Microcoryphia, Machilidae). Journal of Morphology, 206: 181-195.

11. Machida, R., T. Nagashima and H. Ando (1992) Amnioserosal fold of the jumping bristletail Pedetontus unimaculatus Machida (Hexapoda, Microcoryphia, Machilidae). Proceedings of Arthropodan Embryological Society of Japan, 27: 13-15.

12. Tsutsumi, T., R. Machida and K. Haga (1993) How can the panoism of Thysanoptera be understood? Proceedings of Arthropodan Embryological Society of Japan, 28: 9-12.

13. Machida, R., T. Nagashima and H. Ando (1994) Embryonic development of the jumping bristletail Pedetontus unimaculatus Machida, with special reference to embryonic membranes (Hexapoda: Microcoryphia, Machilidae). Journal of Morphology, 220: 147-165.

14. Machida, R. and H. Ando (1994) Reduction of lateral yolk folds in flattened eggs of a jumping bristletail, Pedetontus unimaculatus Machida (Microcoryphia: Machilidae). International Journal of Insect Morphology and Embryology, 23: 293-295.

15. Mendes, L. F. and R. Machida (1994) A new myrmecophilous Ateluridae (Zygentoma) from Japan. Japanese Journal of Entomology, 62: 701-708.

16. Machida, R. and R. Ohbayashi (1996) Thysanurans from the Ogasawara Islands (Zygentoma, Lepismatidae) Ctenolepisma longicaudata and Acrotelsa collaris new to the Japanese fauna. Japanese Journal of Entomology, 64: 365-366.

17. Tojo, K. and R. Machida (1997) Embryogenesis of the mayfly Ephemera japonica McLachlan (Insecta: Ephemeroptera, Ephemeridae), with special reference to abdominal formation. Journal of Morphology, 234: 97-107.

18. Tojo, K. and R. Machida (1997) Embryogenesis of Ephemera japonica McLachlan (Insecta: Ephemeroptera). Proceedings of Arthropodan Embryological Society of Japan, 32: 25-28.

19. Machida, R. and H. Ando (1998) Evolutionary changes in developmental potentials of the embryo proper and embryonic membranes along with the derivative structures in Atelocerata, with special reference to Hexapoda (Arthropoda). Proceedings of Arthropodan Embryological Society of Japan, 33: 1-13.

20. Ikeda, Y. and R. Machida (1998) Embryogenesis of a dipluran, Lepidocampa weberi Oudemans (Hexapoda: Diplura): External morphology. Journal of Morphology, 237(2): 101-115.

21. Tojo, K. and R. Machida (1998) Egg structures of Japanese Ephemera (Insecta: Ephemeroptera: Ephemeridae). Entomological Science, 1(4): 573-579.

22. Tojo, K. and R. Machida (1998) Early embryonic development of the mayfly Ephemera japonica McLachlan (Insecta: Ephemeroptera, Ephemeridae). Journal of Morphology, 238(4): 327-335.

23. Machida, R. (2000) Serial homology of the mandible and maxilla in the jumping bristletail Pedetontus unimaculatus Machida, based on external embryology (Hexapoda: Archaeognatha, Machilidae). Journal of Morphology, 245(1): 19-28.

24. Machida, R. (2000) Usefulness of low-vacuum scanning electron microscopy in descriptive insect embryology. Proceedings of Arthropodan Embryological Society of Japan, 35: 17-19.

25. Ikeda, Y. and R. Machida (2001) Embryogenesis of the dipluran Lepidocampa weberi Oudemans (Hexapoda: Diplura, Campodeidae): Formation of dorsal organ and related phenomena. Journal of Morphology, 249: 242-251.

26. Machida, R., Y. Ikeda and K. Tojo (2002) Evolutionary changes in developmental potentials of the embryo proper and embryonic membranes in Hexapoda: A synthesis revised. Proceedings of Arthropodan Embryological Society of Japan, 37: 1-11.

27. Sakuma, M. and R. Machida (2002) Germ band formation in a centipede Scolopocryptops rubiginosus L. Koch (Chilopoda: Scolopendromorpha). Proceedings of Arthropodan Embryological Society of Japan, 37: 19-23.

28. Masumoto, M. and R. Machida (2002) Amniotic pore of a silverfish, Lepisma saccharina Linnaeus (Hexapoda: Zygentoma, Lepismatidae). Proceedings of Arthropodan Embryological Society of Japan, 37: 25-27.

29. Uchifune, T. and R. Machida (2002) Note on the early germ band stage in Galloisiana yuasai Asahina (Insecta: Notoptera). Proceedings of Arthropodan Embryological Society of Japan, 37: 45-48.

30. Tojo, K. and R. Machida (2002) Affinity of Ephemeroptera: A review of the proposed phylogenetic relationships of the major pterygote groups, the Ephemeroptera, Odonata and Neoptera, based on comparative embryology. In: "The 21th Century and Aquatic Entomology in East Asia. Proceedings of (Y. J. Bae ed.)", pp. 85-96. 1st Joint Meeting and Symposium of Aquatic Entomological Societies of East Asia.

31. Mendes, L. F. and R. Machida (2003) On some Zygentoma (Insecta) from the Ryukyu Archipelago, Japan. Boletim da Sociedade Portuguesa de Entomologia, 7: 381-390.

32. Machida, R. and I. Takahashi (2003) Embryonic development of a proturan Baculentulus densus (Imadate): Reference to some developmental satages (Hexapoda: Protura, Acerentomidae). Proceedings of Arthropodan Embryological Society of Japan, 38: 13-17.

33. Tojo, K. and R. Machida (2003) Useful techniques in embryological studies of mayflies (Insecta, Ephemeroptera). Proceedings of Joint Meeting of X International Conference on Ephemeroptera and XIV International Symposium of Plecoptera., 205-209.

34. Machida, R. and I. Takahashi (2004) Rearing technique for proturans (Hexapoda: Protura). Pedobiologia, 48: 227-229.

35. Masumoto, M. and R. Machida (2004) Localization of lepismatid embryo in the egg, during the diapause stage (Hexapoda: Zygentoma, Lepismatidae). Proceedings of Arthropodan Embryological Society of Japan, 39: 9-13.

36. Tojo, K., R. Machida, K.-D. Klass and M. D. Picker (2004) Transmission electron microscopic observations of the egg membranes of a South African heel-walker, Karoophasma biedouwensis (Insecta: Mantophasmatodea). Proceedings of Arthropodan Embryological Society of Japan, 39: 23-29.

37. Machida, R., K. Tojo, T. Tsutsumi, T. Uchifune, K.-D. Klass, M. D. Picker and L. Pretorius (2004) Embryonic development of heel-walkers: Reference to some prerevolutionary stages (Insecta: Mantophasmatodea). Proceedings of Arthropodan Embryological Society of Japan, 39: 31-39.

38. Tojo, K., R. Machida, K.-D. Klass and M. D. Picker (2004) Biology of South African heel-walkers, with special reference to reproductive biology (Insecta: Mantophasmatodea). Proceedings of Arthropodan Embryological Society of Japan, 39: 15-21.

39. Sakuma, M. and R. Machida (2004) Germ band formation of a centipede Scolopendra subspinipes L. Koch (Chilopoda: Scolopendromorpha). Proceedings of Arthropodan Embryological Society of Japan, 39: 41-43.

40. Tsutsumi, K. and R. Machida (2004) A new technique for elucidating the fine morphological structures of animals, applied to the analysis of the micropylar canal passage in a snakefly, Inocellia japonica Okamoto (Insecta: Neuroptera, Raphidiodea). Proceedings of Arthropodan Embryological Society of Japan, 39: 45-46.

41. Sakuma, M. and R. Machida (2005) Clypeolabrum formation of a centipede Scolopocryptops rubiginosus L. Koch (Chilopoda: Scolopendromorpha). Proceedings of Arthropodan Embryological Society of Japan, 40: 1-4.

42. Masumoto, M. and R. Machida (2005) Origin of ventral epidermis in a silverfish, Lepisma saccharina Linnaeus (Insecta: Zygentoma, Lepismatidae). Proceedings of Arthropodan Embryological Society of Japan, 40: 5-8.

43. Uchifune, T. and R. Machida (2005) Egg membranes of Galloisiana yuasai Asahina (Insecta: Grylloblattodea). Proceedings of Arthropodan Embryological Society of Japan, 40: 9-14.

44. Tsutsumi, T., K. Tojo and R. Machida (2005) Ovarian structure and oogenesis of the South African heel-walker Karoophasma biedouwensis (Insecta: Mantophasmatodea). Proceedings of Arthropodan Embryological Society of Japan, 40: 15-22.

45. Kusakari, M. and R. Machida (2005) Germ band type of Dermaptera: A reference to some early embryos of Anisolabis maritima Gene (Insecta). Proceedings of Arthropodan Embryological Society of Japan, 40: 27-29.

46. Dallai, R., R. Machida, T. Uchifune, P. Lupeti and F. Frati (2005) The sperm structure of Galloisiana yuasai (Insecta, Grylloblattodea) and implications for the phylogenetic position of Grylloblattodea. Zoomorphology, 124: 205-212.

47. Uchifune, T. and R. Machida (2005) Embryonic development of Galloisiana yuasai Asahina, with special reference to external morphology (Insecta: Grylloblattodea). Journal of Morphology, 266: 182-207.

48. Masumoto, M. and R. Machida (2006) Development of embryonic membrane in the silverfish Lepisma saccharina Linnaeus (Insecta: Zygentomoa, Lepismatidae). Tissue and Cell, 38: 159-169.

49. Fukui, M. and R. Machida (2006) Embryonic development of Baculentulus densus (Imadate): Its outline (Hexapoda: Protura, Acerentomidae). Proceedings of Arthropodan Embryological Society of Japan, 41: 21-28.

50. Uchifune, T. and R. Machida (2006) Chorion of a South African heel-walker, Karoophasma biedouwensis Klass et al.: SEM obervations (Insecta: Mantophasmatodea). Proceedings of Arthropodan Embryological Society of Japan, 41: 29-35.

51. Tsutsumi, K. and R. Machida (2006) Embryonic development of a snakefly, Inocellia japonica Okamoto: Its outline (Insecta: Neuroptera, Raphidiodea). Proceedings of Arthropodan Embryological Society of Japan, 41: 37-45.

52. Machida, R. (2006) Evidence from embryology for reconstructing the relationships of hexapod basal clades. Arthropod Systematics and Phylogeny, 64: 95-104.

53. Kurihara, Y., R. Machida, M. Fukui, T. Okuda and S. Harayama (2006) Entomopathogenic fungi isolated from laboratory-reared Baculentulus densus (Acerentomidae, Protura). Edaphologia. 80: 25-28.

54. Dallai, R., R. Machida, Y. Jintsu, F. Frati and P. Lupetti (2007) The sperm structure of Embioptera (Insecta) and phylogenetic considerations. Zoomorphology, 126: 53-59.

55. Jintsu, Y., T. Uchifune and R. Machida (2007) Egg membranes of a web-spinner, Aposthonia japonica (Okajima) (Insecta: Embioptetra). Proceedings of the Arthropodan Embryological Society of Japan, 42: 1-5.

56. Oka, K., D. S. Yamamoto, J. M. Lee, K. Tojo, M. Hatakeyama and R. Machida (2007) Development of embryonic appendages in the sawfly, Athalia rosae ruficornis Jakovlev (Hymenoptera): Morphological observation and cloning of a Distal-less orthologue. Proceedings of the Arthropodan Embryological Society of Japan, 42: 31-32.

57. Rost-Roszkowska, M. M., R. Machida and M. Fukui (2009) The role of cell death in the midgut epithelium in Filientomon takanawanum (Protura). Tissue and Cell, 42: 24-31.

58. Uchifune, T. and R. Machida (2009) The “Polyneopteran Comparative Embryological Project”: Present and future. Proceedings of the Arthropodan Embryological Society of Japan, 43: 57-59.

59. Machida, R. (2009) Reconstruction of hexapod basal clades from embryological evidence. Proceedings of the Arthropodan Embryological Society of Japan, 43: 39-42.

60. Shimizu, S. and R. Machida (2009) Eggs and their deposition and care of a primitive earwig Diplatys flavicollis (Shiraki) (Dermaptera: Diplatyidae). Proceedings of the Arthropodan Embryological Society of Japan, 44: 29-32.

61. Fukui, M. and R. Machida (2009) Formation of the entognathy in Baculentulus densus (Imadate) (Hexapoda: Protura, Acerentomidae). Proceedings of the Arthropodan Embryological Society of Japan, 44: 25-27.

62. Jintsu, Y. and R. Machida (2009) TEM Observations of the egg membranes of a webspinner, Aposthonia japonica (Okajima) (Insecta: Embioptera). Proceedings of the Arthropodan Embryological Society of Japan, 44: 19-24.

63. Sekiya, K. and R. Machida (2009) Embryonic development of Occasjapyx japonicus (Enderlein): Notable features (Hexapoda: Diplura, Dicellurata). Proceedings of the Arthropodan Embryological Society of Japan, 44: 13-18.

64. Niwa, N., A. Akimoto-Kato, T. Niimi, K. Tojo, R. Machida and S. Hayashi (2010) Evolutionary origin of the insect wing via integration of two developmental modules. Evolution and Development, 12: 168-176.

65. Zizzani, Z. V., R. Machida, K. Tsutsumi, D. Reynoso-Velasco, P. Lupetti and R. Dallai (2010) Ultrastructural studies on euspermatozoa and paraspermatozoa in Mantispidae (Insecta, Neuroptera). Tissue and Cell, 42: 81-87.

66. Jintsu, Y., T. Uchifune and R. Machida (2010) Structural features of eggs of the primitive phasmatodean Timema monikensis Vickery & Sandoval, 1998 (Insecta: Phasmatodea, Timematidae). Arthropod Systematics and Phylogeny, 68: 125-132.

67. Oka, K., N. Yoshiyama, K. Tojo, R. Machida and M. Hatakeyama (2010) Characterization of abdominal appendages in the sawfly, Athalia rosae (Hymenoptera), by morphological and gene expression analyses. Development, Genes and Evolution, 220: 53-59.

68. Dallai, R., D. Mercati, A. Carapelli, F. Nardi, R. Machida, K. Sekiya, F. Frati (2010) Sperm accessory microtubules suggest the placement of Diplura as the sister-group of Insecta s.s. Arthoropod Structure and Development, 40: 77-92.

69. Wipfler, B., R. Machida, B. Muller, R. G. Beutel (2011) On the head morphology of Grylloblattodea (Insecta) and the systematic position of the order, with a new nomenclature for the head muscles of Dicondylia. Systematics Entomology, 36: 241-266.

70. Mashimo, Y., R. Machida, R. Dallai, M. Gottardo, D. Mercati, R. G. Beutel (2011) Egg structure of Zorotypus caudelli Karny (Insecta, Zoraptera, Zorotypidae). Tissue and Cell. (in press)

71. Shimizu, S., R. Machida Notes on mating and oviposition of a primitive representative of the higher Forficulina, Apachyus chartaceus (Insecta: Dermaptera: Apachyidae). Arthropod Systematics and Phylogeny. (in press)








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