A new species of Eusirus from Jeju Island, Korea (Crustacea, Amphipoda, Eusiridae)

Autor: Tae Won Jung, Min-Seop Kim, Ho-Young Soh, Seong Myeong Yoon
Jazyk: angličtina
Rok vydání: 2016
Předmět:
Zdroj: ZooKeys, Vol 640, Iss , Pp 19-35 (2016)
Druh dokumentu: article
ISSN: 1313-2970
1313-2989
DOI: 10.3897/zookeys.640.10630
Popis: A new eusirid amphipod, Eusirus bulbodigitus sp. n., from Jeju Island, Korea is described with a detailed description and illustrations. Eusirus bulbodigitus sp. n. shows common features with the five known eusirid amphipods E. abyssi Stephensen, 1944, E. columbianus Bousfield & Hendrycks, 1995, E. hirayamae Bousfield & Hendrycks, 1995, E. laticarpus Chevreux, 1906, and E. parvus Pirlot, 1934, such as the mandibular palp article 3 bearing a group of setae laterally. However, this new species is differentiated by the combination of the following characteristics: the eyes are poorly developed, the propodus on pereopod 4 is slightly shorter, the inner margin of dactylus on pereopod 4 is swollen, the length of pereopods 5–7 is moderate, the urosomite 1 has a dorsal protrusion distally, and the telson is shallowly cleft. This is the first record of the genus Eusirus Krøyer, 1845 from Korean waters.
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