TY - JOUR

T1 - Revision of an Arctic kinorhynch species

T2 - Echinoderes svetlanae and E. tubilak are junior synonyms of E. remanei

AU - Grzelak, Katarzyna

AU - Yamasaki, Hiroshi

AU - Mincks, Sarah

AU - Phillips, Anna J.

AU - Sørensen, Martin V.

N1 - Publisher Copyright: © 2022 Elsevier GmbH

PY - 2023

Y1 - 2023

N2 - The kinorhynch species Echinoderes remanei (Blake, 1930) is redescribed herein, based on the material housed in the National Museum of Natural History, Smithsonian Institution in Washington D.C as well as specimens collected at several other sites in the Northern Hemisphere. Echinoderes remanei is characterized by the presence of middorsal spines on segments 4 to 8 and lateroventral spines on segments 6 to 9; four pairs of glandular cell outlets type 2 on segment 2 (subdorsal, laterodorsal, sublateral, and ventrolateral), and one pair on segment 4 (subdorsal), 5 (midlateral), 8 (sublateral) and 10 (laterodorsal); lateroventral tubes on segment 5; and by sexual dimorphism expressed in lateral terminal spine lengths (in females, the lateral terminal spines are about half as long as those in males). The study also reveals that the two other species, Echinoderes tubilak Higgins & Kristensen, 1988 and Echinoderes svetlanae Adrianov, 1999 in Adrianov & Malakhov (1999) are conspecific with E. remanei. Therefore, E. tubilak and E. svetlanae are proposed as junior synonyms of E. remanei and are synonymized with E. remanei (Blake, 1930).

AB - The kinorhynch species Echinoderes remanei (Blake, 1930) is redescribed herein, based on the material housed in the National Museum of Natural History, Smithsonian Institution in Washington D.C as well as specimens collected at several other sites in the Northern Hemisphere. Echinoderes remanei is characterized by the presence of middorsal spines on segments 4 to 8 and lateroventral spines on segments 6 to 9; four pairs of glandular cell outlets type 2 on segment 2 (subdorsal, laterodorsal, sublateral, and ventrolateral), and one pair on segment 4 (subdorsal), 5 (midlateral), 8 (sublateral) and 10 (laterodorsal); lateroventral tubes on segment 5; and by sexual dimorphism expressed in lateral terminal spine lengths (in females, the lateral terminal spines are about half as long as those in males). The study also reveals that the two other species, Echinoderes tubilak Higgins & Kristensen, 1988 and Echinoderes svetlanae Adrianov, 1999 in Adrianov & Malakhov (1999) are conspecific with E. remanei. Therefore, E. tubilak and E. svetlanae are proposed as junior synonyms of E. remanei and are synonymized with E. remanei (Blake, 1930).

KW - Echinoderes remanei

KW - Kinorhyncha

KW - Meiofauna

KW - Museum collection

KW - Redescription

KW - Taxonomy

U2 - 10.1016/j.jcz.2022.11.001

DO - 10.1016/j.jcz.2022.11.001

M3 - Journal article

AN - SCOPUS:85142754308

VL - 302

SP - 75

EP - 89

JO - Zoologischer Anzeiger

JF - Zoologischer Anzeiger

SN - 0044-5231

ER -