• Title/Summary/Keyword: New Species

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A New Marine Species of Miracula (Oomycota) Parasitic to Minidiscus sp. in Iceland

  • Buaya, Anthony T.;Scholz, Bettina;Thines, Marco
    • Mycobiology
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    • v.49 no.4
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    • pp.355-362
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    • 2021
  • Obligate endoparasitic oomycetes are known to ubiquitously occur in marine and freshwater diatoms, but their diversity is still largely unexplored. Many of these parasitoids are members of the early-diverging oomycete lineages (Miracula, Diatomophthora), others are within the Leptomitales of the Saprolegniomycetes (Ectrogella, Lagenisma) and some have been described in the Peronosporomycetes (Aphanomycopsis, Lagenidium). Even though some species have been recently described and two new genera were introduced (Miracula and Diatomophthora), the phylogeny and taxonomy of most of these organisms remain unresolved. This is contrasted by the high number of sequences from unclassified species, as recently revealed from environmental sequencing, suggesting the presence of several undiscovered species. In this study, a new species of Miracula is reported from a marine centric diatom (Minidiscus sp.) isolated from Skagaströnd harbor in Northwest Iceland. The morphology and life cycle traits of this novel oomycete parasite are described herein, and its taxonomic placement within the genus Miracula is confirmed by molecular phylogeny. As it cannot be assigned to any previously described species, it is introduced as Miracula islandica in this study. The genus Miracula thus contains three described holocarpic species (M. helgolandica, M. islandica, M. moenusica) to which likely additional species will need to be added in the future, considering the presence of several lineages known only from environmental sequencing that clustered within the Miracula clade.

Saussurea albifolia M. J. Nam & H. T. Im (Compositae), a new species from the Baekdudaegan Area, Korea

  • Sun, Eun-Mi;Yun, Seon A;Kim, Seung-Chul;Chung, Gyu-Young;Nam, Myoung-Ja;Im, Hyoung-Tak
    • Journal of Species Research
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    • v.10 no.2
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    • pp.159-163
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    • 2021
  • Saussurea albifolia, a new species, is reported from the Baekdudaegan Mountains. It has distinctive morphological characteristics that distinguish it from other congeneric species of Saussurea in Korea; radical leaves persist or withered till flowering, white tomentose leaf beneath, campanulate involucre with brown-cobwebby hairs, and dark purplish phyllaries with acuminate tips. Saussurea albifolia is a new, endemic species, narrowly restricted to the Korean Peninsula as a consequence of adaptation to alpine or subalpine environments of the Baekdudaegan Area. Among the Korean species of Saussurea, S. gracilis Maxim., S. insularis Kitam., and S. seoulensis Nakai are morphologically similar to S. albifolia by having leaves with white hairs beneath and persistent radical leaves during blooming period. It has been well understood that Saussurea is one of the highly diversified and adaptable groups in Asteraceae and also that the currently recognized species in Korea likely significant underestimates its diversity on the Korean Peninsula.

Selaginella austrotibetica (Selaginellaceae), a new spikemoss from Xizang, China

  • Meng-Hua Zhang;Jie Yang;Aleksandr Petrovich Shalimov;Jong-Soo Kang;Xian-Chun Zhang
    • Journal of Species Research
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    • v.13 no.1
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    • pp.1-9
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    • 2024
  • Selaginella austrotibetica, a new spikemoss species from China, is described. The species is epipetric and was found on a moss-covered rocky cliff by a riverbank. Morphologically, it is unlike any anisosporophyllous species in the genus Selaginella. However, it resembles species of the S. sanguinolenta group, especially similar to S. sajanensis in gross morphology, except for the characters of strobilus. The molecular phylogenetic analysis clearly showed that S. austrotibetica was nested within the anisosporophyllous species clade, forming a sister relationship with the clade of S. vaginata and S. xipholepis, and distinct from the S. sanguinolenta group, including S. sajanensis. Although S. austrotibetica is sister to the clade of S. vaginata and S. xipholepis, the species can be clearly distinguished by its sparse leaves on branches, dorsal leaves that are broad-ovate, base obtuse to rounded, margin denticulate or very shortly sparsely ciliolate, and leaves that are slightly thick and shiny. Therefore, we described Selaginella austrotibetica as a new species and discuss its phylogenetic relationships within the genus Selaginella.

Ten new species of genus Sarcotragus (Demospongiae: Dictyoceratida: Irciniidae) from Korea

  • Sim, Chung Ja;Lee, Kyung Jin;Kim, Hyung June
    • Journal of Species Research
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    • v.5 no.3
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    • pp.443-458
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    • 2016
  • Ten new species of genus Sarcotragus (Demospongiae: Dictyoceratida: Irciniidae) are described from Geomundo Island and Jejudo Island, Korea. All new species of the Sarcotragus are distinguished from the other reported species of Sarcotragus by the skeletal structure, especially fasciculate primary fibres. The characters of genus Sarcotragus have cylindrical primary fascicles filled with wads of filaments or flattened fascicles. All of the primary fibres are not cored with foreign debris. Secondary fibres have slightly fasciculate branch or plastic-like web. They are all not cored with foreign debris. All skeletal fibres are very irregular. The surface is covered with loose or tight filamentous membrane.

A New Species of Koreocobitis from Korea with a Redescription of K. rotundicaudata (새코미꾸리속 Koreocobitis 어류의 1 신종 및 새코미꾸리 K. rotundicaudata 의 재기재)

  • Kim, Ik-Soo;Park, Jong-Yong;Nalbant, Teodor T.
    • Korean Journal of Ichthyology
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    • v.12 no.2
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    • pp.89-95
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    • 2000
  • Two species of the genus Koreocobitis in Korea are reviewed with a key to species and their illustrations: Koreocobitis rotundicaudata and K. naktongensis sp. nov. A new species, Koreocobitis naktongensis is described based on 9 specimens collected from the Naktong River, Korea. The new species is distinguished from Koreocobitis rotundicaudata by the following combination of characters: yellow body colouration with many brownish speckles, truncate caudal fin, fewer vertebrae, and longer head. It is remarked biogeographically that Koreocobitis naktongensis is distributed only in the Naktong River, Korea.

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Impatiens violascens (Balsaminaceae): A new species from Korea (꼬마물봉선: 한국에서 발견된 물봉선속(봉선화과)의 1신종)

  • Kim, Yoon-Young;Ji, Seong-Jin;Hong, Wan-Pyo;Oh, Byoung-Un
    • Korean Journal of Plant Taxonomy
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    • v.40 no.1
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    • pp.59-64
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    • 2010
  • Herein is described a new species of Impatiens violascens B.U. Oh & Y.Y. Kim (Balsaminaceae) discovered on Bohyeon Mountain in Yeongcheon-si, Gyeongsangbuk-do, Korea. The new species is distinct from a closely-related species, I. textorii, by having a flower half the size that of I. textorii, sharply narrowed lower sepal, one half- to one time-coiled spur, and distal lobes of elliptical type laterally united petals. The key to these two species is provided.

Notes on the Korean species of the Genus Streblocera (Insecta: Hymenoptera: Braconidae) with Description of a New Species and a Key to Korean Species (한국산 Streblocera 속 (벌 목: 고치벌 과)의 추가종 기록 및 검색표)

  • Ser;Deok-Seo Ku
    • Animal Systematics, Evolution and Diversity
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    • v.14 no.4
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    • pp.319-325
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    • 1998
  • A new species Streblocera planispina sp. nov. is described from Korea. S. macroscapa Ruthe and S. dentiscapa Belokobylskij are recorded for the first time from Korea. A key to Korean species of Streblocera is given.

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Two New Species of Myrmica (Hymenoptera, Formicidae) from Korea

  • Elmes, Graham W.;Radchenkoo, Alexander G.;Kim, Byung-Jin
    • Animal cells and systems
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    • v.5 no.2
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    • pp.107-112
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    • 2001
  • Two new species of Myrmica from Korea are described. M. koreana belongs to the schencki species-group of Myrmica and is most similar to M. schencki. It is possibly endemic to the Korean Peninsula. M. hyungokae belongs to the lobicornis-group and is most similar to M. jessensis. It has some characters normally associated with social parasites but it is probably a free-living species. Both new species were clearly separated from their nearest relatives on subjective characters (shape, sculpture etc.) and this was confirmed by discriminant analysis of the morphometrics.

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A new species and a new record of Meghimatium Slugs (Pulmonata: Philomycidae) in Korea

  • Park, Gab-Man
    • Korean Journal of Environmental Biology
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    • v.39 no.3
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    • pp.399-405
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    • 2021
  • Until now, five species (Meghimatium bilineatum, M. fruhstorferi, Limax flavus, L. marginatus, Deroceras reticulatum) in three genera of families Philomycidae and Limacidae have been reported in Korea. Philomycidae is a family of air-breathing land snails. Meghimatium hongdoensis sp. nov. is described based on its middle size (60-80 mm in body length), its body coloration (dark-red yellow), no dorsal with streaks, its genitalia, and 16rDNA sequence analysis. Specimens of this new species were collected from Hongdo island, Sinan-gun, Jeollanam-do, Korea. This species is only known from the type locality at Hongdo to date. It could be found in high-humidity sites. Meghimatium uniforme (Laidlaw 1937) was the first one reported in Korea. It was also collected from Gageodo island, Sinan-gun, Jeollanam-do, Korea. In this study, morphological characteristics including their radula and genital structures of these two species were described. Preliminary results of mitochondrial 16S rDNA sequencing and phylogenetic analyses indicated that these species belonged to the Korean clade.

Clematis pseudotubulosa (Ranunculaceae), a new species from Korea

  • PARK, Beom Kyun;KIM, Jin-Seok;CHUNG, Gyu Young;KIM, Jung-Hyun;SON, Dong Chan;JANG, Chang-Gee
    • Korean Journal of Plant Taxonomy
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    • v.52 no.1
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    • pp.35-44
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    • 2022
  • Clematis pseudotubulosa (Ranunculaceae), a new species from Gyeonggi-do in the Republic of Korea, is described and illustrated. The new species is morphologically similar to C. takedana but differs in its leaves, which are always ternate with shallowly lobed leaflets (vs. 1-pinnate with deeply lobed three to five leaflets), and its oblong-shaped flower buds (vs. ovoid), larger flowers (vs. smaller flowers), and pantoporate pollen (vs. tricolpate). A detailed species description, geographical distribution, and an identification key for all species of Clematis that occur in Korea are also provided.