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Description of Elisesione imajimai sp. nov. From Japan (Annelida: Hesionidae) and A Redescription of E. problematica (Wesenberg-Lund, 1950) and Its Confirmation Within Hesionini.


ABSTRACT: Naoto Jimi, Danny Eibye-Jacobsen, and Sergio I. Salazar-Vallejo (2018) Elisesione imajimai sp. nov. is newly described based on specimens collected in Sagami Bay, Japan, at a depth of 150-250 m. This new species resembles E. problematica (Wesenberg-Lund, 1950) from Iceland, but differs because in E. imajimai sp. nov. the ventral cirri surpass the tips of the neurochaetal lobes, reaching to the medial part of the neurochaetal bundle; the palps are 1/2-4/5 as long as the antennae; the aciculae are pale brownish; and the dorsal integument shows 9-10 transverse wrinkles per segment, whereas in E. problematica the ventral cirri hardly reach the tips of the neurochaetal lobes; the palps are as long as the antennae; the aciculae are black; and there are 15 transverse wrinkles per segment. A morphological redescription of E. problematica based on its type material and a revised key to identify species in the genus are also provided. A phylogenetic analysis based upon four genes (COI, 16S, 18S, 28S) confirms its position within Hesionini.

SUBMITTER: Jimi N 

PROVIDER: S-EPMC6517717 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature

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Description of <i>Elisesione imajimai</i> sp. nov. From Japan (Annelida: Hesionidae) and A Redescription of <i>E. problematica</i> (Wesenberg-Lund, 1950) and Its Confirmation Within Hesionini.

Jimi Naoto N   Eibye-Jacobsen Danny D   Salazar-Vallejo Sergio I SI  

Zoological studies 20180214


<b>Naoto Jimi, Danny Eibye-Jacobsen, and Sergio I. Salazar-Vallejo (2018)</b> <i>Elisesione imajimai</i> sp. nov. is newly described based on specimens collected in Sagami Bay, Japan, at a depth of 150-250 m. This new species resembles <i>E. problematica</i> (Wesenberg-Lund, 1950) from Iceland, but differs because in <i>E. imajimai</i> sp. nov. the ventral cirri surpass the tips of the neurochaetal lobes, reaching to the medial part of the neurochaetal bundle; the palps are 1/2-4/5 as long as th  ...[more]

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