• Title/Summary/Keyword: Canthocamptus mirabilis

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Redescription of Canthocamptus morimotoi Miura, a Stygobiontic Harpacticoid Species from Korea, with a Brief Review on C. mirabilis Group

  • Cheon Young Chang
    • Animal cells and systems
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    • v.2 no.4
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    • pp.427-434
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    • 1998
  • Canthocamptus morimotoi Miura, a cave-dwelling harpacticoid species belonging to C. mirabilis species group, is fully redescribed and illustrated on the basis of the material newly collected from the type locality, Simpigul Cave, South Korea. C. morimotoi is the only genuine subterranean species in the C, mirabilis group, and claimed to be a relict species restricted to its type locality. The sexually isomorphic ornamentation of the outer terminal seta on the distal exopodal segment of male leg 4 and the well-developed spines on the disteromedial corner of anal somite are the most significant features differentiating this species from ther members of the mirabilis-group.

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Taxonomy on Freshwater Canthocamptid Harpacticoids (Copepoda) from South Korea - 1. Genus Canthocamptus (한국 담수산 딱정장수노벌레과 갈고리노벌레류의 분류 - 1. 딱정장수노벌레( Canthocamptus)속)

  • Cheon Young Chang;Ji Min Lee
    • Animal Systematics, Evolution and Diversity
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    • v.19 no.1
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    • pp.149-159
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    • 2003
  • A taxonomic study on the freshwater harpacticoids of the genus Canthocamptus has been accomplished as one of the serial researches on the family Canthocarnptidae in South Korea. As a result of it, a total of seven species of the genus are listed, two of which are new to Korean fauna: C. kitaurensis Kikuchi and C. macrosetifer Ishida. Additional materials of five species belonging to Canthocamptus mirabilis species group are recorded. A key to the seven species of the genus Canthocamptus known from Korea is prepared.

Redescription of Canthocamptus mirabilis Sterba (Copepoda, Harpacticoida), Based on the Topotypic Material from China (중국의 모식산지에서 채집한 갈고리노벌레류 Canthocamptus mirabilis Sterba의 재기재)

  • Chang, Cheon-Young
    • Animal Systematics, Evolution and Diversity
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    • v.17 no.1
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    • pp.1-11
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    • 2001
  • Conthocamptus mirabilis Sterba is redescribed on the basis of the material newly collected from the type locality near Bekijing, China, with an evaluation of the variability of several characters. C. mirabilis possesses the plesiomorphic characters of the round and narrow hyaline membrane and the unmodified outer terminal furcal setae, while it also bears the apomorphic ones of the male-type caudal rami in females and the modified outer terminal setae of male leg 4 exopod. the peculiar dorsal keel ornamented with spinule array on the female's caudal rami is the most significant feature differentiating this species from its relatives of the mirabilis group, which turned out to be a species group of closely related and largely allopatric or parapatric species. Affinities with the allies of the species group are discussed, and the morphological discrepancies differentiating the Japanese population are enumerated.

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Taxonomy on Canthocamptus semicirculus and C. coreensis n. sp.(Harpacticoida, Canthocarnptidae), with a Key to the C. mirabilis Species Group from South Korea (딱정 장수노벌레속(갈고리노벌레목, 딱정장수노벌레과) mirabilis 종군에 속하는 1신종 1기록종의 분류학적 연구)

  • Chang, Cheon-Young
    • Animal Systematics, Evolution and Diversity
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    • v.18 no.2
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    • pp.233-244
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    • 2002
  • As one of the serial studies on the taxonomy of Conthocamptus mirabilis species group in South Korea, C. semicirculus Kikuchi, widely distributed in the southern part of the Far East, and C. coreensis n. sp. from the middle west of South Korea are recorded. Intraspecific variability of some important characters like outer caudal setae and the spinous process of male leg 3 exopod was examined in Korean population of C. semicirculus. Canthocamptus coreensis n. sp. possesses the plesiomorphic characters of the round and narrow hyaline membrane of anal operculum and lacking the sexual reverse transformation in female caudal rami, while it also evolves the apomorphic ones of the modified outer apical setae of male leg 4 exopod and the spinous process of male leg 3 exopod. A key to the five species of the species group known from Korea is prepared.