Embedded Files
Books
Books
ハダニの科学（佐藤 幸恵ほか編）. 朝倉書店（2024）Link
ハダニの冬越し. ダニのはなし ―人間との関わり―（島野 智之・高久元編）. 朝倉書店 (2016). pp. 136-137 Link
ナミハダニ. 研究者が教える動物飼育. 第２巻. 昆虫とクモの仲間（針山 孝彦ほか編）, 共立出版 (2012). pp.1-5 Link
Original papers
Original papers
3. Plants (in preparation)
*Corresponding author
1. Mites
1. Mites
Keita Kunihiro, Ren Iwasa, Katsura Ito* (2025) Antipredatory effects of inhabiting psyllid galls in the spider mite Eotetranychus asiaticus (Acari: Tetranychidae). Experimental and Applied Acarology (in press)
Chida, M., Mizuguchi, T., & Ito, K.* (2025) Evaluation of counterattack efficiency against predators in Schizotetranychus brevisetosus using small glass beads and phytoseiid eggs. Entomologia Experimentalis et Applicata. doi: 10.1111/eea.13590
Nagata K, Negoro Y, Ito K* (2025) Overwintering at multiple life stages in Schizotetranychus shii (Acari: Tetranychidae), a specialist of evergreen chinquapin. Exp Appl Acarol 94, 10 (2025). https://doi.org/10.1007/s10493-024-00978-5
Ito, K.*, Takatsuki, K. (2023) Hybridisation between host races broadens the host range of offspring in Eotetranychus asiaticus (Acari: Tetranychidae). Experimental and Applied Acarology 84: 389-405. Link Full text
Katsura Ito* and Yuta Ioku (2022) A novel type of counterattack against predatory thrips in Schizotetranychus brevisetosus (Acari: Tetranychidae). International Journal of Acarology 48:207-213. Link
Naoya Oda and Katsura Ito* (2021) Photoperiodic control of reproductive arrest in the oak-inhabiting spider mite Schizotetranychus brevisetosus (Acari: Tetranychidae). Experimental and Applied Acarology 84: 389-405. Link Full text
Katsura ITO* (2020) Predators of the nest-making spider mite Schizotetranychus brevisetosus (Acari: Tetranychidae). Journal of Acarological Society of Japan 29: 59-70. Link
Katsura Ito* and Nozomi Yamanishi (2019) Production of winter eggs in Schizotetranychus brevisetosus (Acari: Tetranychidae) inhabiting evergreen Japanese blue oak. Experimental and Applied Acarology 78:521–534. Link
Katsura Ito* (2019) Lethal attack of Schizotetranychus brevisetosus Ehara (Acari: Tetranychidae) on predatory midge larva. Systematic and Applied Acarology 24(2): 187–192. Link
Katsura Ito* and Younghae Chae (2018) Cold hardiness in immature stages and adults in the adult-diapausing spider mite Stigmaeopsis longus. Physiological Entomology 44: 11-19 Link
Katsura ITO* and Eri HAMADA (2018) Adult female sensitivity to day-length conditions in terms of winter-egg production in Schizotetranychus brevisetosus Ehara (Acari: Tetranychidae). Journal of Acarological Society of Japan 27: 69-76. Link
Katsura ITO*, Tatsuya FUKUDA, and Ryo ARAKAWA (2017) Host plant and field density of Tetranychus phaselus Ehara (Acari: Tetranychidae). Journal of the Acarological Society of Japan 26: 13-24. Link
Tamura K and Ito K* (2017) Extremely low fecundity and highly female-biased sex ratio in nest-living spider mite Schizotetranychus brevisetosus. Systematic and Applied Acarology 22:170-183. Link
Yutaka Saito, Yan-Xuan Zhang, Kotaro Mori, Katsura Ito, Yukie Sato, Anthony R. Chittenden, Jian-Zhen Lin, Younghae Chae, Takane Sakagami and Ken Sahara (2016) Variation in nesting behavior of eight species of spider mites, Stigmaeopsis having sociality. The Science of Nature (Naturwissenschaften) 103:87. Link
Y Saito, J-Z Lin, Y-X Zhang, K Ito, Q Liu, AR Chittenden (2016) Two new species and four new life types in Tetranychidae. Annals of Entomological Society of America 109: 463-472. Link.
Chieko Masuda, Kaori Tamura, Younghae Chae, Tatsuya Fukuda, Ryo Arakawa, Katsura Ito*, Yutaka Saito (2015) Lethal male combats in Schizotetranychus brevisetosus (Acari: Tetranychidae) on blue Japanese oak (Quercus glauca). Experimental and Applied Acarology 67:259-268. Link
Jie Ji, Yanxuan Zhang, Jinshi Wang, Jianzhen Lin, Li Sun, Xia Chen, Katsura Ito, Yutaka Saito (2015) Can the predatory mites Amblyseius swirskii and Amblyseius eharai reproduce by feeding solely upon conspecific or heterospecific eggs (Acari, Phytoseiidae)? Applied Entomology and Zoology 50:149-154. Link
Younghae Chae, Nanako Yokoyama, Katsura Ito*, Tatsuya Fukuda, Ryo Arakawa, Yan-Xuan Zhang, Yutaka Saito (2015) Reproductive isolation between Stigmaeopsis celarius and its sibling species sympatrically inhabiting bamboo (Pleioblastus spp.) plants. Experimental and Applied Acarology 66:11-23. Link Erratum
Katsura Ito* (2014) Intra-population genetic variation in diapause incidence of adult-diapausing Tetranychus pueraricola (Acari: Tetranychidae). Ecological Entomology 39:186-194. Link
Katsura Ito*, Tatsuya Fukuda, Hiroshi Hayakawa, Ryo Arakawa, Yutaka Saito (2013) Relationship between body colour, feeding, and reproductive arrest under short-day development in Tetranychus pueraricola (Acari: Tetranychidae). Experimental and Applied Acarology 60:471-477. Link
Katsura Ito* et al. (2012) Effects of inbreeding on variation in diapause duration and early fecundity in the Kanzawa spider mite. Entomologia Experimentalis et Applicata 144:202-208. Link
Katsura Ito* (2011) Overwintering survival and postdiapause fecundity in a population of the Kanzawa spider mite Tetranychus kanzawai (Acari: Tetranychidae) on Orixa japonica (Rutaceae). Entomologia Experimentalis et Applicata 53:51-56. Link
Katsura Ito*, Nanako Yokoyama, Hiroshi Hayakawa, Yukio Minamiya, Jun Yokoyama and Tatsuya Fukuda (2011) Molecular phylogenetic relationship of Stigmaeopsis spider mites (Acari: Tetranychidae) collected from Yamagata Prefecture. Bull. of Yamagata Univ., Nat Sci. 17:19-29. Link
Katsura Ito* (2010) Effect of host plants on diapause induction in immature and adult Tetranychus kanzawai (Acari: Tetranychidae). Experimental and Applied Acarology 52:11-17. Link
Yuko Kawakami, Hideharu Numata, Katsura Ito, Shin G. Goto (2010) Dominant and recessive inheritance patterns of diapause in the two-spotted spider mite Tetranychus urticae. Journal of Heredity 101:20-25. Link
Katsura Ito* and Tatsuya Fukuda (2009) Molecular phylogeny of Stigmaeopsis spider mites (Acari: Tetranychidae) based on the Cytochrome Oxidase subunit I (COI) region of mitochondrial DNA. Applied Entomology and Zoology 44:343-355. Link
Katsura Ito* (2009) Does artificial selection on diapause incidence cause correlational changes in other life-history traits? Case study in a spider mite population. Entomologia Experimentalis et Applicata 130:266-274. Link
Yuko Kawakami, Shin G. Goto, Katsura Ito, Hideharu Numata (2009) Suppression of ovarian development and vitellogenin gene expression in the adult diapause of the two-spotted spider mite Tetranychus urticae. Journal of Insect Physiology 55:70-77. Link
Yutaka Saito, Anthony R. Chittenden, Kotaro Mori, Katsura Ito, Atsushi Yamauchi (2008) An overlooked side effect of nest-scattering behavior to decrease predation risk (Acari: Tetranychidae, Stigmaeidae). Behavioral Ecology and Sociobiology 63:33-42. Link
Katsura Ito* (2007) Negative genetic correlation between diapause duration and fecundity after diapause in a spider mite. Ecological Entomology 32:643–650. Link
Katsura Ito* and Yutaka Saito (2006) Effects of host-plant species on diapause induction of the Kanzawa spider mite, Tetranychus kanzawai. Entomologia Experimentalis et Applicata 121:177-184. Link
Katsura Ito* (2005) Development times under long- and short-day conditions in the Kanzawa spider mite Tetranychus kanzawai (Acari: Tetranychidae). Experimental and Applied Acarology 36:291-304. Link
Yutaka Saito, Katsura Ito and Takane Sakagami (2005) Imaginal induction of diapause in several ‘adult-female diapausing’ spider mites. Physiological Entomology 30:96-101. Link
Katsura Ito* (2004) Deteriorating effects of diapause duration on postdiapause life history traits in the Kanzawa spider mite. Physiological Entomology 29:453-457. Link
Katsura Ito* (2003) Effect of leaf condition on diapause induction of a Kanzawa spider mite Tetranychus kanzawai Kishida (Acari: Tetranychidae) population on tea plants. Applied Entomology and Zoology 38:559-563. Link
2. Insects and harvestmen
2. Insects and harvestmen
Kenji Suetsugu, Tomonari Nozaki, Shun K Hirota, Shoichi Funaki, Katsura Ito, Yuji Isagi, Yoshihisa Suyama, Shingo Kaneko (2023) Phylogeographical evidence for historical long-distance dispersal in the flightless stick insect Ramulus mikado. Proc. R. Soc. B. 290: 20231708. http://doi.org/10.1098/rspb.2023.1708
Tomonari Nozaki, Kenji Suetsugu, Kai Sato, Ryuta Sato, Toshihito Takagi, Shoichi Funaki, Katsura Ito, Kazuki Kurita, Yuji Isagi, Shingo Kaneko (2021) Development of microsatellite markers for the geographically parthenogenetic stick insect Phraortes elongatus (Insecta: Phasmatodea). Genes Genet. Syst. 96: 1–5. https://doi.org/10.1266/ggs.21-00022
Kumekawa Y, Miura O, Fujimoto H, Ito K, Arakawa R, Yokoyama J, Fukuda T (2019) Possible occurrence of reproductive isolation between two geographical clades of a laniatorid harvestman Pseudobiantes japonicus (Arachnida: Opiliones: Epedanidae) in Shikoku. Edaphologia 104: 19-24 Link
Kenji Suetsugu, Shoichi Funaki, Asuka Takahashi, Katsura Ito and Takeshi Yokoyama (2018) Potential role of bird predation in the dispersal of otherwise flightless stick insects. Ecology 99: 1504-1506 Link 高知新聞朝刊 2018/05/29 社会面p.26 (online版） EulekAlert! 日本語版 Sciencemag
Y Kumekawa, H Fujimoto, O Miura, J Yokoyama, K Ito, S Tebayashi, R Arakawa, T Fukuda (2017) Morphological and molecular analyses of Bandona boninensis (Arachnida: Opiliones: Assamiidae) in the Bonin (Ogasawara) islands. Ogasawara Research 43:1-17.
Yoshimasa Kumekawa, Katsura Ito, Osamu Miura, Jun Yokoyama, Shin-Ichi Tebayashi, Ryo Arakawa, Tatsuya Fukuda (2015) Molecular phylogeny of Kilungius insulanus (Arachnida: Opiliones: Epedanidae) in Amami-Oshima Island and Okinawa Island. Edaphologia 96:1-7.
Yoshimasa Kumekawa, Katsura Ito, Nobuo Tsurusaki, Hiroshi Hayakawa, Kyohei Ohga, Jun Yokoyama, Shin-Ichi Tebayashi, Ryo Arakawa, Tatsuya Fukuda (2014) Phylogeography of the laniatorid harvestman Pseudobiantes japonicus and its allied species (Arachnida: Opiliones: Laniatores: Epedanidae). Annals of the Entomological Society of America 107:756-772. Link（吉富さんのブログで紹介されました）
Kengo Nakahira, Ryoya Kashitani, Masafumi Tomoda, Rika Kodama, Katsura Ito, Satoshi Yamanaka, Mitsutoshi Momoshita, Ryo Arakawa and Masami Takagi (2011) Systemic nicotinoid toxicity against the predatory mirid Pilophorus typicus: residual side effect and evidence for plant sucking. Journal of the Faculty of Agriculture, Kyushu University 56: 53-55.
Katsura Ito* et al. (2010) Analysis of genetic variation and phylogeny of the predatory bug, Pilophorus typicus, in Japan using mitochondrial gene sequences. Journal of Insect Science 11: 18. Link
Kengo Nakahira, Ryoya Kashitani, Masafumi Tomoda, Rika Kodama, Katsura Ito, Satoshi Yamanaka, Mitsutoshi Momoshita and Ryo Arakawa (2010) Side effects of vegetable pesticides on a predatory mirid bug, Pilophorus typicus Distant (Heteroptera: Miridae). Applied Entomology and Zoology 45: 239-243. Link
Andres Felipe Montoya-Alvarez, Katsura Ito, Kengo Nakahira and Ryo Arakawa (2010) Functional response of Chrysoperla nipponensis and C. carnea (Neuroptera: Chrysopidae) to the cotton aphid Aphis gossypii Glover (Homoptera: Aphididae) under laboratory conditions. Applied Entomology and Zoology 45: 201-206. Link
Katsura Ito* et al. (2009) Molecular identification of genotypes of Pilophorus typicus (Heteroptera: Miridae) in Japan using PCR-RFLP analysis of mitochondrial DNA. Environment Control in Biology 47: 191-195. Link
3. Plants (selected articles)
3. Plants (selected articles)
Gale SW et al. (2025) Molecular phylogenetic analyses reveal multiple long-distance dispersal events and extensive cryptic speciation in Nervilia (Orchidaceae), an isolated basal Epidendroid genus. Front. Plant Sci. 15:1495487. doi: 10.3389/fpls.2024.1495487
4. Others
4. Others
新刊紹介（2022）「幻のシロン・チーズを探せ—熟成でダニが活躍するチーズ工房—」八坂書房．昆蟲 25(2): 79
新刊紹介（2021）「寄生虫のはなし」朝倉書店．昆蟲 24(1): 12
伊藤 桂 (2009) トピックス：日韓合同ダニ学会議報告．植物防疫 第63巻3号（平成21年3月号）63-65.
Grant
Grant
基盤研究(C)（研究分担者）生活型進化からみたハダニ類「属」分類の再検討と新系統仮説の構築. 2012～14年度（研究代表者：齋藤裕、No. 24570014）
JST 研究成果最適展開支援プログラムFSステージ探索タイプ 課題名：ハダニを利用した土着天敵クロヒョウタンカスミカメ増殖キットの改良. 2011年度（責任者：伊藤桂）
基盤研究(B)（研究分担者）共同的社会が捕食者対抗戦略としてハダニ類で収斂進化したとする仮説の総合的検証. 2008～11年度（研究代表者：齋藤裕、No. 20370006）
基盤研究(C)（研究分担者）オオミノガヤドリバエの寄主利用戦略-なぜ高知でオオミノガが絶滅しないのか-. 2008～10年度（研究代表者：荒川良、No. 20580055 ）
Social contribution
Social contribution
2016.9 伊藤の同定結果に基づき、高知県病害虫防除所から、平成28年度病害虫発生予察特殊報第１号（ニラのカンザワハダニ）が出されました。
http://www.nogyo.tosa.pref.kochi.lg.jp/info/dtl.php?ID=5692
第14回国際ダニ学会議・京都市・2014年7月14～18日 運営委員・シンポオーガナイザー#3-05: Mites under the sun: how radiant heat, visible light and ultraviolet affect mite physiology, life history and community ecology? Katsura Ito and Masaaki Sudo
学会活動
学会活動
第58回日本応用動物昆虫学会（高知市文化プラザ「かるぽーと」・高知大学朝倉キャンパス） 大会事務局長
日本蜘蛛学会第45回大会・南国市（高知大学物部キャンパス） 2013年8月24日・25日 運営事務局長
第20回日本ダニ学会大会・高知市（城西館）・2011年9月28日～ 30日 大会事務局長
日本ダニ学会・会計幹事 2013-2015年
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