• Title/Summary/Keyword: Pseudoscorpionida

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The Pseudoscorpion FamilyChthoniidae(Arachnida: Pseudoscorpionida) in Korea, with Two New Species from the Genus Tyrannochthonius (한국산 꼬마앉은뱅이과(거미강: 앉은뱅이목)의 분류)

  • Yong Hong;Kim, Tae-Heung;Lee, Won-Koo
    • Animal Systematics, Evolution and Diversity
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    • v.12 no.2
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    • pp.173-184
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    • 1996
  • As a result of this report, the pseudoscorpion family Chthoniidae in Korea comprises nine species in four genera. All species are collected mainly from the litter layer in wooded forests. The two new species, Tyrannochthonius suppressalis n. sp. and Tyrannochthonius spinatus n. sp., described herein occur on islands in the Yellow Sea.

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한국의 토양서식성 부채앉은뱅이 속(앉은뱅이목 : 꼬마앉은뱅이과)

  • 이원구;서홍렬
    • Animal Systematics, Evolution and Diversity
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    • v.11 no.4
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    • pp.455-468
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    • 1995
  • Three species of the soil inhabiting pseudoscorpions of the genus Allochthonius [A. buanensis Lee. 1982, A. coreanus (Morikawa, 1970), A. opticus (Ellingsen, 1907)l from Korea. Of these, A. opticus is new for Korean fauna. A. buanensis differs from A. opticus and is confirmed as a valid species based on the carapal chaetotaxy, which is proposed as a considerably stable and useful taxonomic character in genus Allochthonius. The most common species in Korea is A. buanensis, while the other species are relatively rare.

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Altitudinal Distribution and Monthly Fluctuation of Soil Pseudoscorpions (Arachnida: Pseudoscorpionida) at the Piago, Mt. Chiri (지리산 고도에 따른 토양서식성 앉은뱅이(거미강)의 월별 개체군 밀도 변화)

  • Hong, Yong;Kim, Tae-Heung;Kim, Chang-Hwan
    • The Korean Journal of Ecology
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    • v.20 no.5
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    • pp.347-354
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    • 1997
  • Seasonal fluctuations in density of soil-inhabiting Pseudoscorpions at the Piagol, Mt. Chiri were assessed on the basis of 4,984 individuals collected from March 1993 to February 1995. They encompassed 2 families, 6 genera and 11 species. Species composition and abundance were as follows: Allochthonius buanensis 47.0%, Microcreagris sp. 2. 20.7%, Microcreagris pygmaea 12.9%, Microcreagris japonica 9.8%, Pararoncus japonicus 3.7%, Mundochthonius minusculus 3.2%, Parobisium longipalpus 1.2%, Microbisium pygmaeum 1.0%, Allochthonius coreanus 0.2%, Microcreagris sp. 1 0.2%, and Parobisium robustiella 0.1%. Diversity index (H') decreased and dominance index (C) increased at the height of 1,200 m. The heights of 500 m. The heights of 500 m and 600 m were dominated heavily by A. buanensis and abundance of M. japonical and Microcreagris sp. 2 was also comparatively high and H' was high in March and April, low in August and September. in case of May, Jun., Jul., Oct., Nov., Dec., Jan. 1993, and Feb. 1994, H' stayed at a relatively constant level. A total of 4,984 individuals including 1,170 protonymphs (23.5%), 1,251 deutonymphs (25.1%), 533 tritonymphs (10.7%), and 2,030 adults (40.7%) was collected from the study sites. Sex ratio of the Pseudoscorpions was approximately 1 female : 1.1 male.

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