Red spiders and mites of citrus trees

Quayle, H. J.

doi:10.5962/bhl.title.59342

Cited by 21 publications

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“…According to Yokoyama's description, the females are bright red and their legs bear two strong claws. Judging from these characteristics, it is almost certain that T. parva does not belong to the Tetranychidae but to the genus Agistemus Summers, 1960 (Stigmaeidae), and it may probably be referred to either A. terminalis (Quayle, 1912) or A. exsertus Gonzalez, 1963. These two stigmaeid species are common on a wide variety of plants in Honshu, and are found preying on eggs of spider mites, as well as other thing (Ehara 1977a).…”

Section: Tacebia Parvamentioning

confidence: 99%

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

Ehara¹

1999

Spec.Div.

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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...

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Section: Tacebia Parvamentioning

confidence: 99%

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

Ehara¹

1999

Spec.Div.

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“…Scolothrips sexmaculatus has long been recognized as a specialized preda tor of spider mites (Fleschner, 1958;Garman, 1924;Garman and Townsend, 1938;Hood and Herrick, 1926;Lamiman, 1935;Leigh, 1963;Lincoln et al, 1953;Lord, 1949;McGregor, 1914;Mc Gregor and McDunough, 1917;McMurtry and Johnson, 1966;Michelbacher, 1959;Michel bacher et al, 1952;Mori, 1967;Muma, 1955 and1958;Newcomer and Yothers, 1929;Oatman, 1970;Oatman and Mc Murtry, 1966;Oatman et al, 1967;Per gande, 1882;Quayle, 1912;van den Bosch and Hagen, 1966;Watson, 1918 and1923;and Whitcomb and Bell, 1964). Based on his studies which re vealed that S. sexmaculatus had a low fecundity and low food requirements, Bailey (1939) considered it unlikely that this predator was responsible for controlling, or noticeably reducing, spi der mite infestations.…”

Section: Collçction and Maintenance Of Stock Colonymentioning

confidence: 99%

“…Various morphological aspects of S. sexmaculatus are illustrated by Bailey (1939 and1957), Hinds (1902), Pries ner (1950), and Quayle (1912). A key to the species of North America was re-…”

Section: Introductionmentioning

confidence: 99%

The bionomics ofScolothrips sexmaculatus(Pergande) (Thysanoptera: Thripidae), an insect predator of spider mites

Gilstrap¹,

Oatman²

1976

Hilg

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The biology, temperature response, and prey requirements for Scolothrips sexmactllatus were studied in the laboratory with Tetranychus pacificus as the main prey. At 26.7 C and 50% relative humidity, the mean life cycle was 8.9 (range: 7.6-10.3) days; egg, 7.2 days; Ist-stage larva, 2.8 days; 2nd-stage larva, 2.5 days; prepupa, 1.2 days; and pupa, 2.5 days. Male and female immatures developed in the same length of time, but as larvae, killed significantly different mean numbers of prey eggs, 43.0 and 56.0, respectively. Eggs of S. sexmaculatus are inserted into leaf tissue. Larval eclosion lasted a mean 7.6 min, and larvae commenced feeding a mean 40.3 min after vacating the chorion. No larval preference or nonpreference was noted for any given prey stage. Imaginal molts lasted a mean 9.1 min, and the new,adult commenced feeding after a mean 92.7 min. For adult females, no preference or nonpreference was noted for any prey developmental stage. Mating was unnecessary to induce oviposition, which usually commenced on the Ist imaginal day. Unmated females produced only male progeny. Thus, S. sexmaculatus is a facultatively arrhenotokous species. Larval and adult thrips were behaviorally well adapted to preying on tetranychids which produce copious webbing. Thigmotaxes were evident in all instars, and cannibalism did not occur until prey became scarce.

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“…The genus Agistemus, which is an anagram of Stigmaeus, was erected by Summers (1960) based on the type species Caligonus terminalis Quayle, 1912. Wood (1967 and Tseng (1982) suggested the genus Agistemus as a junior synonym of Zetzellia Oudemans, 1927, based on Gonzalez ' (1965) observation that Zetzellia mali (Ewing) and Agistemus striolatus Gonzalez-Rodriguez went through similar ontogenetic changes in organization of dorsal plates from larva to adult and thus that Agistemus evolved from the Zetzellia maori group of species.…”

Section: Introductionmentioning

confidence: 99%

A new record and a new species of the genus Agistemus Summers (Acari: Stigmaeidae) from Greece

Stathakis

Kapaxidi

Papadoulis

2014

Zootaxa

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The genus Agistemus Summers (Acari: Stigmaeidae) is reported for the first time in Greece. Agistemus duzgunesae Koç, Çobanoğlu & Madanlar, a new record for the Greek fauna, is re-described and illustrated based on specimens collected from various plants. Furthermore, Agistemus macrosetosus Stathakis & Kapaxidi n. sp. is described and illustrated based on specimens collected on Rubus sp. A list of all species of the genus Agistemus is provided.

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Red spiders and mites of citrus trees

Cited by 21 publications

References 0 publications

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

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

The bionomics ofScolothrips sexmaculatus(Pergande) (Thysanoptera: Thripidae), an insect predator of spider mites

A new record and a new species of the genus Agistemus Summers (Acari: Stigmaeidae) from Greece

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