Journal of the Acarological Society of Japan

Original Papers

A Histiostomatid Associated with a Common Earwig, Gonolabis marginalis (Dohrn) (Dermaptera: Anisolabididae) in Japan

Kazumi TAGAMI

2013 Volume 22 Issue 2 Pages 91-99
Published: November 25, 2013
Released on J-STAGE: December 25, 2013

DOIhttps://doi.org/10.2300/acari.22.91

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A histiostomatid, colonized from a most common Dermaptera, Gonolabis marginalis Dohrn, 1864 (Anisolabididae) in central Japan, was studied taxonomically. In spite of a discrepancy, shorter leg I tarsus in the deutonymph, it was identified as Histiostoma mahunkai Fain, 1974. Taxonomic information, on the male and female, recorded in this article. The most records on Histiostoma phoresy on Dermaptera have been one-sided on H. polypori Oudemans, 1900 and H. feroniarum(Dufour), 1839 on a European Dermaptera, Forficula auricularia Linnaeus, 1758 (Forficulidae). Very recently, three other phoretic species of histiostomatids recorded from three Australian giant earwigs, Titanolabis colossea Dohrn, 1864 (Anisolabididae). This species, H. mahunkai, was the first record from Japan, and the combination was also the first record with Dermaptera.

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Species Composition of Predators of Spider Mites Surrounding the Chrysanthemum Fields in Nara Prefecture and Their Occurrence in Relation to Chemical Spraying

Yoshinori KUNIMOTO, Kiyohide INDA, Yuzo KOYAMA, Eizi YANO

2013 Volume 22 Issue 2 Pages 101-115
Published: November 25, 2013
Released on J-STAGE: December 25, 2013

DOIhttps://doi.org/10.2300/acari.22.101

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The species composition of predators of spider mites was monitored by using kidney bean traps infested by spider mites that were placed on the ground around the chrysanthemum fields in Heguri, Nara Prefecture. The predominant phytoseiid mite species captured by the traps was Neoseiulus womersleyi. The next abundant predacious insect species was Feltiella sp.
　In the chrysanthemum fields infested by spider mites at a low density, no phytoseiid mites were found. In the fields frequently sprayed with chemicals that affected phytoseiid mites, phytoseiid mites were rarely observed even when the density of the spider mites on the chrysanthemums increased. However, in the field sprayed with chemicals only a few times, the number of phytoseiid mites increased when the spider mite density increased resulting in a decrease in the spider mite density.
　The phytoseiid mite, Neoseiulus womersleyi was found in the chrysanthemum field that was not sprayed with chemicals for more than 2∼3 weeks after harvest and where the occurrence of spider mites was observed.

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A New Nasal Mite Species of the Genus Rhinonyssus (Mesostigmata: Rhinonyssidae) from Anas platyrhynchos (Anseriformes: Anatidae) in Russia

Ivan DIMOV

2013 Volume 22 Issue 2 Pages 117-121
Published: November 25, 2013
Released on J-STAGE: December 25, 2013

DOIhttps://doi.org/10.2300/acari.22.117

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A new species of nasal mites, Rhinonyssus kadrae n. sp. (Mesostigmata: Rhinonyssidae), collected from the Mallard, Anas platyrhynchos Linnaeus, 1758 (Anseriformes: Anatidae) from the Leningrad Province, Russia, is described. Rhinonyssus kadrae n. sp. is characterized by the following features: large oval form with 1 podosomal shield strongly sclerotized trapezium-shaped form, and without mesosomal shieldlets and sternal shield; anal shield strongly sclerotized, and two anal setae situated lateral to this shield.

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A New Species of the Genus Larinyssus Strandtmann (Mesostigmata: Rhinonyssidae) from the Common Tern Sterna hirundo (Charadriiformes: Sternidae) in Russia

Ivan DIMOV

2013 Volume 22 Issue 2 Pages 123-128
Published: November 25, 2013
Released on J-STAGE: December 25, 2013

DOIhttps://doi.org/10.2300/acari.22.123

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A new nasal mite species, Larinyssus iohanssenae n. sp. (Mesostigmata: Rhinonyssidae), is described on the basis of the material obtained from the Common Tern Sterna hirundo Linnaeus (Charadriiformes: Sternidae) collected in Leningrad province, Russia. Larinyssus iohanssenae n. sp. is distinguished from closely related species Larinyssus substerna Butenko, 1975 by the absence of dorsal shields or shieldlets on idiosoma, the absence of sternal shield, and the presence of the narrow genital shield which is approximately four times longer than its width.

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Two New Records of Oribatid Mites (Acari) from Turkey

Şule BARAN, Soner KILIÇ

2013 Volume 22 Issue 2 Pages 129-134
Published: November 25, 2013
Released on J-STAGE: December 25, 2013

DOIhttps://doi.org/10.2300/acari.22.129

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In the current research, two species, Amerus polonicus Kulczynski, 1902 and Zetorchestes grandjeani Krisper, 1987 were obtained from the province of Sakarya and given some morphological descriptions. The two species are recorded for the first time from Turkey where the family Ameridae to which the former species belongs is also the first record and the latter species is the second record as the species of Zetorchestes.

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