• Animal Systematics, Evolution and Diversity
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• 제35권1호
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• pp.10-14
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• 2019

Acanthochitonidae Pilsbry, 1893 is one of the chiton families characterized by 9 pairs of sutural tufts on a well-expanded girdle that overgrows plates. It is found in intertidal and subtidal zones worldwide. Of its eight genera, only two have been previously reported in South Korea: Acanthochitona Gray, 1821 and Notoplax H. Adams, 1862. Here we report Leptoplax doederleini (Thiele, 1909) as the first record of the genus Leptoplax in South Korea and describe and compare its morphological features with N. kaasi Hong, Dell'Angelo and Van Belle, 1990. In addition, we provide the partial sequence of the mitochondrial DNA cytochrome c oxidase subunit I gene as a DNA barcode sequence record.

• Animal Systematics, Evolution and Diversity
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• 제35권1호
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• pp.6-9
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• 2019

The genus Dendrodoris Ehrenberg, 1831 includes about 46 valid species worldwide, and is found in relatively shallow waters in the Indo-Pacific, Atlantic, and Australian regions. To date, five Dendrodoris species have been reported from Korea. In this study, we report D. guttata (Odhner, 1917) collected from Jeju Island. Morphology is distinguished from other Dendrodoris species by the shape of the black spots on the dorsal mantle and coloration of the gills. We determined mitochondrial cytochrome c oxidase I (cox1) partial sequences and combined them with publically available sequences of closely related congeneric species to examine its phylogenetic position among Dendrodoris species.

• Animal Systematics, Evolution and Diversity
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• 제35권1호
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• pp.30-32
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• 2019

The brachyuran crab Bythograeidae Williams, 1980 is common in hydrothermal vent fields worldwide and has recorded to sixteen species of six genera. In this study, we firstly determined the cytochrome c oxidase subunit 1 (CO1) DNA barcodes for the fifth species of Austinograea, A. hourdezi, from hydrothermal vent regions of the North Fiji Basin in southwestern Pacific Ocean. All CO1 DNA barcodes of A. hourdezi were identical. The interspecies variations of three bythograeid genera were 10.9-13.3% for Austinograea, 6.6-15.7% for Bythograea, and 9.7% for Gandalfus. These results would be helpful to understand taxonomy of brachyuran crabs living in hydrothermal vent fields using CO1 DNA barcodes.

• Animal Systematics, Evolution and Diversity
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• 제35권1호
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• pp.37-39
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• 2019

We determined the cytochrome c oxidase subunit 1 (CO1) sequences of Nebalia koreana Song, Moreira & Min, 2012 (Leptostraca) collected from five locations in South Korea, and this represents the first genetic data of this species. The maximum intra-species variation was 1.2% within Nebalia hessleri Martin, Vetter & Cash-Clark, 1996, while inter-species variation ranged from 9.0% (N. hessleri and Nebalia gerkenae Haney & Martin, 2000) to 34.8% (N. hessleri and Nebalia pseudotroncosoi Song, Moreira & Min, 2013). This result is well agreed with the interspecific relationships among Nebalia species based on morphological characteristics. In conclusion, this study showed the usefulness of CO1 sequences as a DNA barcode within the genus Nebalia Leach, 1814.

• Animal Systematics, Evolution and Diversity
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• 제35권3호
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• pp.105-113
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• 2019

Feather mites comprise two superfamilies(Analgoidea and Pterolichoidea) and are highly specialized ectosymbionts of birds. To date, this group contains more than 2,500 species worldwide. Fifty-five feather mite species have been reported in Korea, and only one species of genus Alloptes has been recorded from black-tailed godwit Limosa limosa. Three new records of feather mites from the L. limosa in Korea are added in this study: Avenzoaria punctata Gaud, 1972, Bregetovia limosae (Buchholz, 1869), and Montchadskiana buchholzi (Canestrini, 1878). The genus Bregetovia Dubinin, 1951 is also new report for this country. In this paper, we provide the morphological descriptions and illustrations based on the present specimens. Additionally, we determined partial sequences of the mitochondrial cytochrome c oxidase subunit I(COI) from three feather mites as DNA barcodes.

• Animal Systematics, Evolution and Diversity
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• 제35권3호
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• pp.151-155
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• 2019

Jesogammarus (Jesogammarus) hinumensis Morino, 1993 was discovered firstly from a brackish water region in Jeju Island, Korea. To identification of the specimens we conducted both of morphological and molecular analyses. This species is characterized by having large eyes and a robust seta on the mandibular palp article 1. The morphology of this Korean specimens was well matched with the original description without variation. The mitochondrial cytochrome c oxidase subunit I(COI) sequences of the present specimens were also completely identical to the sequences of J. (J.) hinumensis collected from the type locality of the species. Thus, we concluded that the Jesogammarus species from Jeju Island is J.(J.) hinumensis, based on both morphological and molecular data.

• Animal Systematics, Evolution and Diversity
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• 제35권3호
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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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• 제35권2호
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• pp.84-90
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• 2019

The brittle star, Amphistigma minuta H.L. Clark, 1938, was collected from Munseom Island, Jeju-do, Korea, by SCUBA diving. This species has distinct morphological features, as follows: a small disk with large papillae on the disk margin; slender arms and four arm spines at proximal; and oral parts the same as those of the genus Amphipholis. Additionally, we obtained partial sequences of the cytochrome c oxidase subunit I gene (COI) (513 bp) and compared them with sequences from Australian A. minuta and 13 other species of Amphiuridae. As a result, intraspecific pairwise distance was 0.4% between two Korean individuals and intraspecific distance between the Australian and the Korean populations was 2.6-2.8%, which indicates they should be considered as the same species. Ultimately, 15 species of the family Amphiuridae have currently been recorded in Korea, including A. minuta.

• Animal Systematics, Evolution and Diversity
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• 제36권4호
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• pp.363-371
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• 2020

A taxonomic study on bdelloid rotifers collected from mosses and/or leaf litter at four different locations in Korea resulted in five new Korean records and a new species, Philodina wonkimi n. sp. Philodina wonkimi n. sp. is easily distinguished from its congeners by the very long antenna which is much longer than the height of the pseudosegment carrying a dorsal antenna in creeping. Among the five new Korean records, two species- and two subspecies-level taxa are new to Asia as well. Adineta rhomboidea Bērzinš, 1950 has been reported from only three European countries including the type locality, and is recorded outside Europe for the first time. Present study is the fourth record for Philodina eurystephana Schulte, 1954. In addition, a partial sequence of mitochondrial cytochrome c oxidase subunit I gene (mtCOX1) for P. wonkimi n. sp. is provided here.

• Animal Systematics, Evolution and Diversity
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• 제36권4호
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• pp.396-399
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• 2020

The Antarctic freshwater copepod, Boeckella poppei (Mrazek, 1901), has the widest range of distribution extending from southern South America to Antarctic continent, among all Boeckella species. Boeckella poppei is the only freshwater copepod known to be inhabiting the Antarctic continent. In present study, we analyzed the DNA barcodes of the mitochondrial cytochrome c oxidase subunit I (COI) gene of B. poppei from King George Island, Antarctica. The intraspecific genetic distances varied from 0% to 13% and interspecific genetic distances ranged from 11% to 14%. The overlap of DNA barcode gap suggests careful threshold-based delimitation of species boundaries.