• 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.

• Journal of Forest and Environmental Science
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• v.30 no.1
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• pp.30-35
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• 2014

Arctosa yasudai (Tanaka, 2000) and Pardosa isago Tanaka, 1977 belonging to Lycosidae were captured by pitfall trap in rice field and apple orchard during the intensive survey of arthropod fauna of agricultural ecosystem in Korea. Taxonomic descriptions for two species are presented with diagnostic illustration.

• Animal cells and systems
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• v.3 no.4
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• pp.355-358
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• 1999

Three novel species, Philodromus daoxianen n. sp., P. ganxiensis n. sp., and P. longitibiacus n. sp., are described based on the specimens collected from Hunan Province, China. P. daoxianen is similar to P. rufus, but its spermathecae is calabash-shaped, that of the latter spherical. It is also similar to P. kendrabatai, but differs in the form of atrium, distance between two spermathecae and dorsal markings of the abdomen. P. ganxiensis differs from other species of the genus Philodromus in eplgynum by a pair of sword-shaped apophyses, palpal organ with slightly wider distal end of a tibial apophysis, and knife-shaped membranous median apophysis. P. longitibiacus differs from other related species in long and thin palps and legs especially tibia of palps, which is about 4.5 times as long as the cybium and basal portion of embolus strongly sclerotized.

• Animal cells and systems
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• v.10 no.2
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• pp.49-64
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• 2006

Two spider species of the genus Asiacoelotes collected from various areas of South Korea are reviewed with spination on each leg, detailed illustrations including trichobothrium patterns and SEM photographs of male palpal organs and female epigynum. These two species, A. songminjae (Paik &Yaginuma, 1969) and A. insidiosus (L. Koch, 1878), have been confused in Korea and Japan because they were previously incompletely described. A. songminjae is redescribed from the neotype and is here synonymized with A. tropidosatus (Wang & Zhu, 1991). A. insidiosus is recorded for the first time in Korea.

• Journal of Ecology and Environment
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• v.30 no.3
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• pp.277-280
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• 2007

Social spiders consistently show highly female-biased sex ratios. However, the sex ratio of subsocial spiders, which have been suggested as an intermediate stage of the evolutionary pathway towards permanent sociality, is generally unknown. We investigated the sex ratio and approximate date of fertilization of the subsocial spider, Amaurobius ferox Walckenaer (Araneae: Amaurobiidae). Investigation over 2 years revealed that sex ratio of A. ferox was consistent across years and averaged 0.49. By early May $(1^{st}{\sim}10^{th})$, 66.6% of female A. ferox observed in the field had already been inseminated, and by late May $(21^{st}{\sim}31^{th})$, 95.4% of females had been inseminated. This result suggests that A. ferox need a long time or cold temperatures to prepare them for reproduction after the developmental attainment of the adult stage.

• The Korean Journal of Soil Zoology
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• v.5 no.1
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• pp.1-4
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• 2000

This paper gives a brief introduction of taxonmic knowledge of Thomisidae and Philodromidae. The materials and papers quoted here mainly from Dr. Song. I hope that information given in the Korean text will be useful to the study of taxonomy of the Famillies Thomisidae and Philodromidae in Asia.

• Animal Systematics, Evolution and Diversity
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• v.14 no.4
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• pp.425-428
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• 1998

The present paper deals with two species of spiders of the genus Trachelas Koch, 1866 from China. Trachelas gui n. sp. is described with illustrations. Trachelas acuminus(Zhu et An, 1988) is transferred to the genus Trachelas.

• Animal Systematics, Evolution and Diversity
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• v.20 no.1
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• pp.73-77
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• 2004

Phalcus joreangensis sp. nov.(Pholcidae) is described with illustrations. This species is very similar to Pholcus clavimaculatus Zhu and Song, 1999 in shape of uncus and embolus of male palpal organ. But it is distinguished from the latter by size of uncus, length of embolus, shape of procursus and trochanter spur, and lengths of 3rd and 4th leg.

• Korean Journal of Environmental Biology
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• v.36 no.3
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• pp.336-344
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• 2018

Four new species of the genus Alloclubionoides collected from mountain litter and hillock litter around the agricultural ecosystem of Korea are described in the present work with appropriate body measurements and morphological illustrations; A. hwaseongensis sp. nov., A. imi sp. nov., A. namhansanensis sp. nov. and A. nasuta sp. nov. Females of A. hwaseongensis sp. nov., A. namhansanensis sp. nov. and A. nasuta sp. nov. can be distinguished based on the epigyne shape and structure of internal genitalia from previously described species. Males of A. imi sp. nov. can also be distinguished based on the shapes of retrolateral tibial apophysis, embolus tip and conductor from previously described species. Also, a key to the Korean Alloclubionoides spiders is provided. Alloclubionoides gajiensis Seo, 2014 is newly synonymized with Alloclubionoides cochlea (Kim et al. 2007).

• Animal Systematics, Evolution and Diversity
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• v.38 no.2
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• pp.69-82
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• 2022

The family Araneidae is a group of orb-weaving spiders and is one of the most diverse groups among the order Araneae. Eighty-one species belonging to 25 genera have been recorded in Korea to date. In this study, four araneid spiders in three genera, viz., Araneus mayumiae, Araneus ogatai, Cyclosa onoi, and Plebs baotianmanensis, were discovered for the first time in Korea. Additionally, Plebs yebongsanensis is removed from synonymy of Plebs sachalinensis, and treated as a new junior synonym of P. baotianmanensis, based on a morphological comparison of females of three Plebs species. Detailed descriptions of four species are provided with accompanying photographs.