Revision of the Spider Mite Family Tetranychidae of Japan (Acari, Prostigmata)

Abstract

A total of 78 Japanese species belonging to the family Tetranychidae (spider mites) are assigned to two subfamilies, five tribes, 16 genera, and 13 species groups (only in four genera). A guide to identification of the Japanese species is provided, and information is also given about the important literature references, host plants, and distribution of each species. Three new species, Eotetranychus rubricans, Oligonychus gotohi, and Tetranychus parakanzawai are described.Eotetranychus lewisi (McGregor), recently recorded from Japan, is redescribed.Key Words: classification, fauna, host plants, Japan, keys, new species, spider mites, Tetranychidae. IntroductionAll spider mites, constituting the family Tetranychidae, are obligatory plant feeders, and many of them are ranked as very important pests of agricultural and ornamental plants. Because of their ecomomic importance, the tetranychids have much been studied in the fields of taxonomy, biology, ecology, cytology, genetics, biochemistry, etc. throughout the world. Early valuable contributions to the taxon omy of Tetranychidae were made by Oudemans, Zacher, Hirst, and Geijskes in Europe, and by Banks, Ewing, and McGregor in the U.S.A. Since 1950 some major monographs of tetranychids have been published: McGregor (1950), Pritchard and Baker (1955), Reck (1959), Wainstein (1960), Tuttle and Baker (1968), Meyer (1974Meyer ( , 1987, Wang (1981), Baker and Tuttle (1994), and Bolland et al. (1998). Other important works have been published in many parts of the world.With respect to the taxonomy of Japanese tetranychids, a few important articles were early published (Kishida 1927;Yokoyama 1929Yokoyama , 1932Yokoyama and Ishii 1934). Since Ehara (1954) Japanese tetranychid species have been studied exten sively by the author and his co-workers. Seventy-five species of tetranychids have hitherto been reported from Japan. In the present taxonomic revision the 78 species now known in this country are divided into subfamilies, tribes, genera, and species groups, with keys and illustra tions of diagnostic characters. The type locality of each species is given in parenthe ses following the citation of the original description. For every species, important references (redescriptions, etc.) and information on the host plants and distribution are also included.The type series of all the Japanese tetranychid species that were previously described by the author, as well as the new species described herein, are now preserved in the Department of Biology, Faculty of Education and Regional Sciences, Tottori University, Tottori. However, at least the holotypes will be deposited in the 64 Shozo Ehara National Science Museum, Tokyo, in the near future. Terminology and Diagnostic CharactersThe measurements are in micrometers Cfim' often being omitted in the text), and those of the holotypes of the new species are given in parentheses following the mean ± S.E.The tetranychid body is divided into the gnathosoma and idiosoma, and the latter is dorsally subdivided into the prodorsum and the...

A preliminary survey of the spider mites (Acari: Tetranychidae) in Latakia governorate of Syria

“…For species identification, all available published literature of tetranychid mites species description was used (e.g. Pritchard and Baker 1955;Baker and Pritchard 1960;Jeppson et al 1975;Gutierrez and Helle 1983;Gutierrez and Schicha 1983;Meyer 1987;Ochoa et al 1994;Ehara 1999;Flechtmann and Knihinicki 2002;Zhang et al 2002;Auger et al 2003;Zhang 2003;Toroitich et al 2009;Vacante 2010;Seeman and Beard 2011). The terminology used for the body setation is according to Lindquist (1985).…”

“…The genus Oxalis is considered as its major host plant (Jeppson et al 1975;Ehara 1999;Migeon andDorkeld 2006-2013). In the field, the injury of this mite appears as fine silver stipples on leaves.…”

Effect of cytochrome P450 inhibitor, piperonyl butoxide, on survival of Panonychus citri (McGregor) (Acari: Tetranychidae) on citrus leaves

“…These mites were maintained in a laboratory at 25°C (16L-8D), and all the experiments described below were performed in the same laboratory. Prior to Ehara and Gotoh (1992), P. mori was thought to be the diapausing strain of P. citri because the two strains are closely related (Ehara, 1999). P. mori lays diapause eggs on the branches of host plants, whereas P. citri never undergoes diapause.…”

“…Panonychus citri (McGregor) (Acari: Tetranychidae) is able to thrive on citrus leaves, whereas other Panonychus species, such as P. mori Yokoyama and P. ulmi Koch, cannot develop (Osakabe, 1987;Gotoh and Noguchi, 1990;Osakabe et al, 1990;Gotoh and Higo, 1997), except for partial development in P. osmanthi Ehara andGotoh (Osakabe andKomazaki, 1996, 1997). In contrast, most Panonychus species develop and reproduce well on leaves of Japanese pear (Pyrus serotina Rehder var.…”

Revisão taxonômica e análise filogenética de espécies de Aponychus Rimando, Praponychus Gonzáles & Flechtmann e Stylophoronychus Prasad (Acari, Eurytetranychini)

“…Aponychus firmianae (Ma & Yuan) (Figuras 16.11 p. 49;17.20 Eutetranychus firmianae Ma & Yuan, 1965: 247. Aponychus firmianae : Ehara, 1980: 206;Rimando & Corpuz-Raros, 1996: 12;Bolland et al, 1998: 20;Ehara, 1999 …”