Time filter

Source Type

Masumoto M.,Yokohama Plant Protection Station | Okajima S.,Tokyo University of Agriculture
Zootaxa | Year: 2017

An Oxythrips-like new genus and species, Paroxythrips podocarpi, is described from Podocarpus macrophyllus in Japan. An Australian species, Oxythrips agathidis Morison, that is associated with Agathis is transferred to Paroxythrips. © 2017 Magnolia Press.


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

Members of Thrips genus-group from Japan are reviewed, and 45 species in seven genera are recognized. Nine species and one genus are newly described: Stenchaetothrips amamiensis sp. n., S. dentatus sp. n., S. pleioblasti sp. n., Thrips nonakai sp. n., T. ogasawarensis sp. n., T. shiranesanus sp. n., T. syringae sp. n., T. typicus sp. n. and Tsutsumiothrips ryukyuensis gen. et sp. n. Moreover, 14 species of two genera are newly recorded from Japan: S. langkawiensis Ng & Mound, S. undatus Wang, Thrips alni Uzel, T. aspinus Mound & Masumoto, T. brevicornis Priesner, T. brunneus Ishida, T. extensicornis Priesner, T. minutissimus Linnaeus, T. pini (Uzel), T. subnudula (Karny), T. sukki Bhatti & Lee, T. treher-nei Priesner, T. urticae Fabricius and T. vitticornis Karny. A previously recorded species, Stenchaetothrips bambusae (Shumsher) is excluded from the Japanese fauna. © 2013 Magnolia Press.


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.


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.


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.


Takano S.-I.,Yokohama Plant Protection Station | Takano S.-I.,Kyushu University
Applied Entomology and Zoology | Year: 2014

Bactrocera latifrons (Hendel) is believed to have originated in Southeast Asia but has invaded Hawaii and most recently East Africa. This insect has also been recorded on Okinawa Island, the far south of Kyushu Island, Japan. To assess the overwintering ability of B. latifrons adults, survival at constant temperatures (8, 10, 12, 14, 15 °C) and under fluctuating thermal regimes (FTRs) was investigated. At 14 or 15 °C, more than 30 % of females survived for 90 days. Time required to kill 95 % of B. latifrons at 8 °C was estimated to be 13 days; at 10 °C, 29 days; and at 12 °C, 38 days for females, and 8, 17, and 24 days at the same above temperatures, respectively, for males, suggesting low cold tolerance of this species. The results show that females survive cold temperatures better than males. Under an FTR of 11 °C (22 h)/20 °C (2 h) (average 11.8 °C) survival of females drastically increased compared to that at a constant temperature of 12 °C, whereas the survival of males increased slightly. Survival under FTRs indicates that adult B. latifrons may not overwinter in the north of Tanegashima Island, located 30 km south of Kyushu Island, Japan. © 2014 The Japanese Society of Applied Entomology and Zoology.


Okajima S.,Tokyo University of Agriculture | Masumoto M.,Yokohama Plant Protection Station
Zootaxa | Year: 2014

Azaleothrips, a phlaeothripine genus of fungus-feeding species, is presumably endemic to the Oriental Region between India and Japan. Although only 10 species have been known in this genus until now, a total of 35 species is recorded here, of which 26 are newly described: from Indonesia-A. bali sp.n., A. bulelengi sp.n., A. dentatus sp.n., A. dorsalis sp.n., A. floresi sp.n., A. inflavus sp.n., A. simulans sp.n., A. sulawesicus sp.n., from the Philippines - A. apoensis sp.n., A. bifidius sp.n., A. luzonensis sp.n., A. mindanaoensis sp.n., A. philippinensis sp.n., from Taiwan - A. atayal sp.n., A. formosae sp.n., A. taiwanus sp.n., from Thailand - A. flavicollis sp.n., A. phuketanus sp.n., A. pulcher sp.n., A. toshifumii sp.n., from Vietnam - A. laocai sp.n., A. vietnamensis sp.n., from W. Malaysia - A. malaya sp.n., A. reticulatus sp.n., A. rich-ardi sp.n., A. templeri sp.n. In addition A. magnus Chen, described from Taiwan, is newly synonymized with A. moundi. Azaleothrips laevigatus, described from southern Japan, is newly recorded more widely in Southeast Asia. A key to 33 species is provided, but A. bhattii and A. lineus cannot be recognized because of the poor information in the original de-scriptions. Copyright © 2014 Magnolia Press.


PubMed | Citrus Research International, Programa Moscafrut SAGARPA SENASICA, Eduardo Mondlane University, Queensland University of Technology and 5 more.
Type: | Journal: Journal of economic entomology | Year: 2016

Bactrocera dorsalis (Hendel) (Diptera: Tephritidae) is arguably the most important tephritid attacking fruits after Ceratitis capitata (Wiedemann) (Diptera: Tephritidae). In 2003 it was found in Africa and quickly spread to most of the sub-Saharan part of the continent, destroying fruits and creating regulatory barriers to their export. The insect is causing new nutritional and economic losses across Africa, as well as the losses it has caused for decades in infested areas of Asia, New Guinea, and Hawaii. This new panorama represents a challenge for fruit exportation from Africa. Phytosanitary treatments are required to export quarantined commodities out of infested areas to areas where the pest does not exist and could become established. This paper describes current phytosanitary treatments against B. dorsalis and their use throughout the world, the development of new treatments based on existing research, and recommendations for further research to provide phytosanitary solutions to the problem.


PubMed | Ehime University, Japan National Agriculture and Food Research Organization, Iwate Biotechnology Research Center and Yokohama Plant Protection Station
Type: Journal Article | Journal: Viruses | Year: 2016

The presence of high molecular weight double-stranded RNA (dsRNA) within plant cells is an indicator of infection with RNA viruses as these possess genomic or replicative dsRNA. DECS (dsRNA isolation, exhaustive amplification, cloning, and sequencing) analysis has been shown to be capable of detecting unknown viruses. We postulated that a combination of DECS analysis and next-generation sequencing (NGS) would improve detection efficiency and usability of the technique. Here, we describe a model case in which we efficiently detected the presumed genome sequence of Blueberry shoestring virus (BSSV), a member of the genus Sobemovirus, which has not so far been reported. dsRNAs were isolated from BSSV-infected blueberry plants using the dsRNA-binding protein, reverse-transcribed, amplified, and sequenced using NGS. A contig of 4,020 nucleotides (nt) that shared similarities with sequences from other Sobemovirus species was obtained as a candidate of the BSSV genomic sequence. Reverse transcription (RT)-PCR primer sets based on sequences from this contig enabled the detection of BSSV in all BSSV-infected plants tested but not in healthy controls. A recombinant protein encoded by the putative coat protein gene was bound by the BSSV-antibody, indicating that the candidate sequence was that of BSSV itself. Our results suggest that a combination of DECS analysis and NGS, designated here as DECS-C, is a powerful method for detecting novel plant viruses.


PubMed | Naha Plant Protection Station and Yokohama Plant Protection Station
Type: Journal Article | Journal: Zootaxa | Year: 2016

Until now, 16 species of Panchaetothripinae in 11genera have been recorded from Japan (Kudo 1992a,b). Recently, however, three further species were found, in the genera Phibalothrips and Caliothrips, and one purpose of this report is to record these two genera from Japan for the first time. The four known species of Phibalothrips occur mainly in the Old World tropics, and are associated with grasses (Mound 2011), whereas the 22 known species of Caliothrips are found in the tropics and subtropics worldwide and feed on a range of different plants including grasses. In this article, P. rugosus, C. punctipennis and C. tongi are newly recorded from Japan, and the male of P. rugosus and second instar larva of C. tongi are described for the first time. Moreover, an identification key to the known species of Phibalothrips is provided. Larval chaetotaxy is based on Heming (1991) and Vierbergen et al. (2010). The specimens studied are deposited in Yokohama Plant Protection Station, Naha Plant Protection Station and the authors collection.

Loading Yokohama Plant Protection Station collaborators
Loading Yokohama Plant Protection Station collaborators