• Animal cells and systems
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• v.2 no.3
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• pp.315-321
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• 1998

Two new marine gastrotrichs of the family Thaumastodermatidae are described from South Korea. Tetranchyroderma gracilium n. sp. bears pestle organs, tetrancres, and two pairs of large dorsolateral tubes. It seems most closely related to T. massiliense Swedmark, T. heterotubulatum Hummon, Todaro and Tongiorgi, and T. boreale Clausen. Thaumastoderma copiophorum n. sp. has five pairs of dorsal cirrata, the overall picture of which differs clearly from that of all known species. In the presence of accessory cirrata, it relates to T. appendiculatum Chang, Lee and Clausen.

• Animal Systematics, Evolution and Diversity
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• v.19 no.1
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• pp.95-102
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• 2003

A new species of Halacaridae, Copidognathus koreanus is recorded from the Korean coast mostly among intertidal coralline algae. The present new species comes close with C.auroroe Newell, C.curtus (Hall), C.richardi (Trouessart) and C.unolaskensis Newell. Morphological similarities and dissimilarities among them are discussed. This is the first report on the marine halacarid mite from Korea.

• Animal Systematics, Evolution and Diversity
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• v.31 no.2
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• pp.101-106
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• 2015

The Remora brachyptera and R. osteochir, belonging to the family Echeneidae were collected for the first time off Jeju Island, Korea, in July and August 2013 and off Ganggu-myeon, Yeongdeok-gun, Gyeongsangbuk-do in June 2014. Remora brachyptera is characterized by a sucker with 16 pairs of disc laminae and a dorsal fin that originates anterior of the origin of the anal fin. Remora osteochir is characterized by a sucker with 18 pairs of disc laminae and a sucking disc that extends beyond the posterior end of the pectoral fin. New Korean names proposed for the species are "Meo-ri-ppal-pan-i" for R. brachyptera and "Ppyeo-dae-ppal-pan-i" for R. osteochir.

• Animal Systematics, Evolution and Diversity
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• v.34 no.4
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• pp.208-214
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• 2018

The genus Luidia belongs to the family Luidiidae in the order Paxillosida. It is a common littoral taxon, and the depth range of the Korean fauna is generally 0-100 m. However, specimens of Luidia were collected from Jeju Island in Korea at 150-160 m depth and identified as Luidia sagamina sagamina $D{\ddot{o}}derlein$, 1920. This species is determined by morphological characteristics and mitochondrial cytochrome c oxidase subunit I sequence analysis. Luidia sagamina sagamina is a very rare sea star in worldwide and it only collected previously from Sagami Bay, Japan, and is newly reported in Korea. Four species of Luidia, including L. s. sagamina, are recorded in the Korean fauna.

• Animal Systematics, Evolution and Diversity
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• v.36 no.3
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• pp.264-267
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• 2020

Thaumatometra tenuis (A. H. Clark, 1907), an unstalked crinoid that lives on the muddy bottoms of the deep sea, is re-described with images in this study. This species distributes in the cold water zone of the northwestern Pacific and had been reported at the end of 1800s from South Korea but had not been found thereafter. So we thought that this species was no longer living in Korea. In March 2019, a large number of T. tenuis were found near the Sokcho-si, Gangwon-do, Korea. So the presence of T. tenuis in Korea is reconfirmed. This species, markedly fragile overall, is characterized by long segments of cirri and pinnules, and P₁ composed of 35 segments.

• Animal Systematics, Evolution and Diversity
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• v.35 no.4
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• pp.186-190
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• 2019

DNA barcoding of two marine tintinnids, Eutintinnus rectus and Schmidingerella arcuata, was performed using four samples collected from different sites in the north-eastern coast of South Korea. The loricae morphology was observed by light and scanning electron microscopy. Molecular data were analyzed using five nuclear ribosomal DNA markers(18S, ITS1, 5.8S, ITS2, and 28S genes) and one mitochondrial marker (CO1 gene). The intraspecific pairwise differences of E. rectus and S. arcuata in the CO1 gene were 0.0-0.2% and 0.0-0.6%, respectively, while there were no differences in the 18S rDNA sequences.

• Animal Systematics, Evolution and Diversity
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• v.35 no.4
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• pp.204-217
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• 2019

This study aims to investigate the fouling bryozoans which attach to artificial structures of Korean ports and harbours. The materials have been collected from 56 sites during the period from 2008 to 2012. As a result of the present study, 40 species of fouling bryozoans were identified. The most abundant species are Bugula neritina (Linnaeus, 1758), Tricellaria occidentalis (Trask, 1857), Watersipora subtoquata (d'Orbigny, 1852), and Cryptosula pallasiana (Moll, 1803). Three species, Flustrellidra armata Grischenko, Seo and Min, 2010, Cauloramphus korensis Seo, 2001, and Parasmittina contraria Seo, 1993 are endemic to Korea. A total of 70 species of fouling bryozoans have been reported in Korea with 16 new bryozoans resulting from this study.

• Animal Systematics, Evolution and Diversity
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• v.8 no.2
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• pp.301-324
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• 1992

A large number of Demospongiate have been collected from 18 localities in Cheju Island and its adjacent waters during the period from 1970 to 1991. The identified Demospongiae consist of 67 species, 40 genera and 30 families. Among them 11 species were new to Koera; Oxeostilon fernaldi, Microciona gradalis, Tedania ignis, Haliclona koremella, Adocia neens, Callyspongia variabilis, Suberites axinelloides, Anthosigmella raromicrosclera, Epipolasis kushimotoensis, Acanthella insignia, and Spongosorites salimonensis.

• Animal Systematics, Evolution and Diversity
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• v.35 no.3
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• pp.156-159
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• 2019

The phyllodicd polychaete species, Nereiphylla hera Kato and Mawatari, 1999 is reported from the intertidal habitats of the eastern coast of South Korea. We determined the DNA barcoding region of the mitochondrial cytochrome c oxidase subunit I (COI) of N. hera and compared nucleotide variation with its congeners. The intra-specific genetic distance between the three COI sequences of N. hera was ranged from 0 to 0.4%. The inter-specific distances between N. hera and other Nereiphylla species ranged from 18.8 to 22.3%. In this study, we reported the first COI barcodes of N. hera with the morphologcial diagnosis and the photographs. These results would be helpful to understand taxonomy of Nereiphylla.

• Animal Systematics, Evolution and Diversity
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• v.35 no.2
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• pp.91-94
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• 2019

An asteroid specimen was collected by using a fishing net from the waters near Daejin harbor, in the East Sea of Korea on 3 Mar 2017. Based on morphological characteristics, the specimen was identified as Aleutihenricia beringiana (Djakonov, 1950), belonging to the family Echinasteridae, of the order Spinulosida. The genus Aleutihenricia was first described by Clark and Jewett, 2010. This species can be distinguished from other Aleutihenricia species by having a roundish protruding shape of abactinal and actinal plates, the number of abactinal spines bearing three to eight spinelets, and the number of adambulacral spines comprising six to eight spinelets. This is the first report of the genus Aleutihenricia and A. beringiana in Korea.