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Nishi-Tokyo-shi, Japan

Masumoto M.,Yokohama Plant Protection Station | Okajima S.,Tokyo University of Agriculture
Zootaxa | Year: 2013

The occurrence in Japan of the daylily thrips, Frankliniella hemerocallis, is confirmed. This thrips probably originated in Asia or Eurasia, because it is highly specific to Hemerocallis [Liliaceae] which is native to these areas. This thrips feeds on leaf, stem and petals rather than pollen. The second instar larva is described, and a key provided to the adults of Frankliniella species recorded from Japan © 2013 Magnolia Press. Source


Yamamura K.,Japan National Institute for Agro - Environmental Sciences | Katsumata H.,Yokohama Plant Protection Station | Yoshioka J.,Moji Plant Protection Station | Yuda T.,Kagoshima Prefectural Plant Protection Office | Kasugai K.,Ministry of Agriculture
Population Ecology | Year: 2016

The establishment of appropriate import quarantine systems is the best known method for preventing the unintentional introduction of invasive alien pests. However, quarantine systems are sometimes judged as non-tariff barriers against trade by the World Trade Organization. The construction of a common scientific theory for quarantine systems is thus extremely important to prevent invasion without causing international conflict. We explain several statistical theories that have been adopted in import plant quarantine systems in Japan. Quarantine systems include three major components: (1) import sampling inspection, (2) early detection procedures, and (3) emergency control. We first explain the principle of risk management that was commonly adopted in these components. Then, we explain the method for calculating the required sample size in the import sampling inspection. We then explain hierarchical sampling inspection for detecting alien pests inside Japan. We further explain the theory for declaring the eradication of invasive alien pests as an emergency control. Actual examples of quarantine actions against the invasion of plum pox virus disease and citrus huanglongbing are discussed. © 2015, The Society of Population Ecology and Springer Japan. Source


Masumoto M.,Yokohama Plant Protection Station | Ohno S.,Okinawa Prefectural Agricultural Research Center | Ganaha-Kikumura T.,Okinawa Prefectural Agricultural Research Center | Miyagi A.,Okinawa Prefectural Agricultural Research Center | Okajima S.,Tokyo University of Agriculture
Zootaxa | Year: 2012

Three species of the genus Scolothrips Hinds, all predatory on spider mites [Tetranychidae], are recorded here from Japan, with S. rhagebianus Priesner newly recorded from this country. These three species, including S. asura Ramakrishna & Margabandhu and S. takahashii Priesner, are re-described. Copyright © 2012 Magnolia Press. Source


Mound L.A.,CSIRO | Masumoto M.,Yokohama Plant Protection Station | Okajima S.,Tokyo University of Agriculture
Zootaxa | Year: 2012

An identification key is provided to 10 species recognised in the genus Craspedothrips, including three new species, C. malaysiae from Malaysia, and C. nyanzai, C. poecilus, and C. reticulatus from East Africa. Plesiopsothrips zurstrasseni Bournier et al. is considered a new synonym of C. hargreavesi, and Plesiopsothrips carvalhoi Bournier a new synonym of C. xanthocerus. One oriental species, C. antennalis Karny, is newly recorded from Australia. Little is known of the biology of most species, but C. antennatus and C. xanthocerus are both recorded in association with Hemileia vastatrix on the leaves of Coffea species (Rubiaceae) in Africa, C. minor is recorded from flowers of Cassia (Fabaceae), and C. antennalis is recorded from plants of the family Apocynaceae. Source


Masumoto M.,Yokohama Plant Protection Station | Okajima S.,Tokyo University of Agriculture
Zootaxa | Year: 2012

Okajimaella nonakai sp. n. and Paithrips pornthipae sp. n. are described from bamboo in Vietnam as the third and second species respectively in these genera. Also newly recorded from bamboo in Vietnam are O. tubercula Nonaka & Janguvitaya and P. circularis Nonaka & Janguvitaya, Neocorynothrips asiaticus Rhamakrishna & Margabandhu, Takethrips megas Nonaka & Jangvitaya, Watanabeotrips yasuakii Okajima, and Yoshinothrips thailandicus Nonaka & Jangvitaya. As a result, nine species from seven genera are now known from bamboo in Vietnam. Copyright © 2012 · Magnolia Press. Source

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