• Title/Summary/Keyword: Arachnida

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Taxonomic Study of the Spider Subfamily Argyrodinae (Arachnida: Araneae: Theridiidae) in Korea

  • Kim, Byung-Woo;Kim, Joo-Pil
    • Animal Systematics, Evolution and Diversity
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    • v.23 no.2
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    • pp.213-228
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    • 2007
  • The kleptoparasitic spider subfamily Argyrodinae in Korea is reviewed with detailed illustrations and SEM photographs of male palpal organs. Five species belonging to four genera of Korean Argyrodinae spiders are redescribed and Argyrodes miltosus Zhu and Song, 1991 is synonymized with A. miniaceu. A key to the species of the Korean Argyrodinae spiders are also provided.

Description of the Male of Alloclubionoides ovatus (Arachnida: Araneae: Amaurobiidae) from Korea

  • Kim, Byung-Woo;Lee, Won-Cheol
    • Animal Systematics, Evolution and Diversity
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    • v.24 no.1
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    • pp.143-145
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    • 2008
  • The first known males of the spider Alloclubionoides ovatus (Paik, 1976) from Korea are described with detailed illustrations, spination of each leg and trichobothrium patterns. Males have a large conductor expanded curvedly 'p'-shaped with thin membrane of distal end surrounded the linear embolus and slender embolus penetrating tegulum.

Note on Drassyllus shaanxiensis of Ground Gnaphosid Spiders (Arachnida: Araneae: Gnaphosidae) in Korea

  • Kim, Byung-Woo;Lee, Won-Cheol;Kwon, Jung-Gyun
    • Animal Systematics, Evolution and Diversity
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    • v.24 no.1
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    • pp.33-38
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    • 2008
  • A ground gnaphosid spider, Drassyllus shaanxiensis Platnick and Song, 1986 is reported for the first time in Korea. This species is described with detailed illustrations, leg spination, trichobothrium patterns, and SEM photographs of male palpal organ and female epigynum.

Bibliographic checklist of Korean spiders (Arachnida: Araneae) ver. 2015

  • Yoo, Jung Sun;Lee, Sue Yeon;Im, Moon Soon;Kim, Seung Tae
    • Journal of Species Research
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    • v.4 no.spc
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    • pp.1-112
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    • 2015
  • The 2015 version of the bibliographic checklist of Korean spiders from the first checklist by Paik and Kim (1956) is presented, together with a complete bibliography of relevant Korean araneological literature. A total of 620 publications during 1907-2015 including original description on the Korean spiders and records of taxonomic description were critically reviewed. Records only from locations within the present borders of South Korea are listed. A total of 748 spider species of 271 genera belonging to 46 families are confirmed to exist in Korea. Twenty one species, whose distribution or existence within the Korean border are uncertain and lacked valid records, are excluded from the present list pending critical validation. Four spider species endemic to North Korean are listed separately from the present list. One genus, Joopilia Chae and Sohn, 2013 and 2 species, Joopilia jooplis Chae and Sohn, 2013 and Dolomedes jirisanensis Kim and Chae, 2012, which had no designated type species and no diagnosis, are cited as nomina nuda. New synonyms of 15 previously described spider species are proposed. Based on their zoogeographical distribution, the Korean spider fauna was found to be influenced by the northern species, including 36 Holarctic and 72 Palearctic species (14.5% of the total species). Korean endemic species include 160 species (21.5% of the total species). Korean indigenous spiders are also distributed in neighboring countries: 318 species in Russia (42.7%), 460 in China (61.7%), and 488 in Japan (65.5%).

A Study on Distribution of Soil Microarthropods in Pinus rigida Plantations following Strip-Cutting (대상벌채(帶狀伐採)한 리기다소나무 조림지(造林地)의 토양미소절지동물(土壤微小節肢動物) 분포(分布)에 관(關)한 연구(硏究))

  • Oh, Kwang-In;Cho, Hi-Doo;An, Ki-Wan;Jang, Seog-Ki;Chung, Jin-Chul;Kim, Choon-Sik
    • Journal of Korean Society of Forest Science
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    • v.90 no.3
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    • pp.257-265
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    • 2001
  • This study was carried out to investigate composition and distribution of the soil microarthropods in Pinus rigida plantations following strip-cutting from May 1998 to April 1999. The results of this study were as follows; 1. The individuals of soil microarthropods found during the research periods were 181, 904 and were identified into 21 orders in 7 classes. The classes were Arachnida, Insecta, Malacostra, Pauropoda, Diplopoda, Chilopoda and Symphyla. 2. The population density of the soil microarthropods was 82,962 individuals at the control area, 62,688 individuals at the reserve area and 36,254 individuals at the cutting area. The microarthropods in the control area were 2 times higher than those in the cutting area. 3. Although the major dominant taxa, Acari and Collembola, decreased in densities at the cutting area, the density reduction in Acari was higher than that in Collembola. This resulted in the increase of Collembola in terms of the relative abundance at the cutting area. 4. Among the total soil microarthropods, Arachnida was 59.74%, followed by Insecta of 39.82%. Such two groups comprise 99.56% of soil microarthropods. 5. According to the relative population density, Acari was 99.18% in Arachnida and 59.25% in the total and Collembola 93.99% in Insecta and 37.42% in the total. Therefore, individuals of Acari and Collembola was 96.67% of the total individuals. And the next abundant groups were Hymenoptera (0.95%), Diptera (0.64%) and Pseudoscorpiones (0.39%). 6. The population density of the soil microarthropods fluctuated seasonally, showing the bimodal pattern, being high in fall and spring. The highest density occurred in November and the lowest in July.

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Spider Fauna in Quite and Galapagos Islands from Ecuador (키토와 갈라파고스 제도의 거미상)

  • 김주필
    • Korean Journal of Environmental Biology
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    • v.20 no.3
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    • pp.263-267
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    • 2002
  • The faunistic study on the spiders (Arachnida, Araneae) from Quito and Galapagos Islands was carried out from 1st to 18th Aug. 2000. During the survey period, 50 species of 48 genera belonging to 22 families (include 1 undetermined species) were identified from 562 collecting individuals. The dominant family was Araneidae (Gasteracantha cancriformis : 32% of total species). The species of settling spiders were richer than those of hunting spiders among the identified spiders. The author redescribes and figures in detail Gasteracantha cancriformis, which was collected during a field trip of Quito and Galapagos Islands.

Two Poorly Known Species of the Spider Genus Xysticus (Arachnida: Araneae: Thomisidae) in Korea

  • Kim, Byung-Woo;Lee, Won-Cheol
    • Animal cells and systems
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    • v.11 no.2
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    • pp.105-115
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    • 2007
  • Two species of the genus Xysticus from Korea are revised with detailed illustrations, spination of each leg, trichobothrium patterns and SEM photographs. The female of X. concretus Utochkin, 1968 is described for the first time and Xysticus lepnevae Utochkin, 1968 from Korea represent the species' southernmost known records. The latter species is distinguished by its male palpal organs with hooked median apophysis, developed ventral tibial apophysis and expanded retrolateral tibial apopysis, two tegular sutures and by it epigynum with triangular atrium and large copulatory ducts circled, with broadly transparent membrane. Furthermore, the Xysticus spiders, previously misidentified in Korea as male of X. dichotomus Paik, 1973 and female of X. bifurcus Paik, 1973 are in fact the true X. concretus.

Soil microarthropods fauna in plantations of the Korean pine(Pinus koraiensis S. et Z.). 3. Population densities of soil microarthropods (잣나무 조림지내 토양미소절지동물상에 관한 연구. 3. 토양미소절지동물의 종류와 분포)

  • 권영립
    • Korean journal of applied entomology
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    • v.32 no.2
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    • pp.168-175
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    • 1993
  • This study investigated the composition and distribution of the soil microarthropods community in plantations of the Korean pine(Pinus Koraiensis SIEB. et ZUCC, the sudong area, Namyangju-gun, Korea) , which had been planted in different years. The soil samples intended to collect soil animals were taken monthly from June 1988 to July 1989. The composition of soil microarthropods community included Arachnida, Chilopoda, Insecta, Collembola, Diplopoda, Crustacea, and Symphyla. The Acarina were composed of 82.4% of Cryptostigmata, 8.0% of Mesostigmata, 7.9% of nymphs, and 1.7% of others. The Insecta included six orders including Hymenoptera(65.8%) and Diptera(13.9%). Population densities increased from when the plantations were first established until the planting were 25 years old, after which they declined. Population densities of the soil microarthropods were highest in July and lowest in January. The Collembola/Acarina ratio is 0.16 overall, and was highest in January and lowest in August.

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