• Title/Summary/Keyword: lysianassid

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Newly Recorded Lysianassid Species, Orchomene japonicus (Crustacea: Amphipoda) from Korea

  • Jung, Jong-Woo;Kim, Won
    • Animal Systematics, Evolution and Diversity
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    • v.24 no.1
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    • pp.139-142
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    • 2008
  • A lysianassid species, Orchomene japonicus (Gurjanova, 1962) associated with sea squirts collected from Geojedo Island located in the South Sea of Korea, is described and illustrated. Present specimens conform to that of Gurjanova's except some morphological variation in mandibular palp.

First Record of the Genus Lepidepecreum (Amphipoda: Lysianassidae: Tryphoinae) from Korean Waters

  • Jung, Tae Won;Choi, Hyun Ki;Yoon, Seong Myeong
    • Korean Journal of Environmental Biology
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    • v.33 no.2
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    • pp.119-125
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    • 2015
  • Despite the worldwide distributions of genus Lepidepecreum and the previous reports from China and Japan, this genus has not yet been recorded in Korean waters. In this study, Korean materials of lysianassid amphipods are assigned readily to the genus Lepidepecreum and identified as L. vitjazi Gurjanova, 1962 based on the following features: well-developed dorsal keels of the pleonite 3 and urosimite 1; unconcaved palmer margin of ganthopod 1; hooked locking spines of propodus on pereopods 3 and 4; and the shape of coxa 4. We also provide the description and illustrations of this species.

A New Record of the Genus Anonyx (Crustacea: Amphipoda: Uristidae) from Korean Waters

  • Heo, Jun-Haeng;Kim, Young-Hyo
    • Animal Systematics, Evolution and Diversity
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    • v.34 no.2
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    • pp.119-125
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    • 2018
  • A newly recorded species of lysianassid amphipod, Anonyx schefferi Steele, 1986 which belongs to the family Uristidae Hurley, 1963 was collected from the East Sea of Korea. The genus Anonyx Krøyer, 1838 was subdivided into five groups mainly based on the amount of constriction of the inner ramus of uropod 2: A. bispinosus group, A. compactus group, A. laticoxae group, A. nugax group, A. validus group. Anonyx schefferi is included in one of the A. laticoxae group. This species is similar to Anonyx laticoxae Gurjanova, 1962, but A. schefferi is characterized by an unconstricted inner ramus of uropod 2 and an upturned epimeron 3 posteroventrally. The species is described and fully illustrated in the present study.