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Vol. 54, 2015
Zelinkaderes yong
sp. nov. from Korea - the first recording of Zelinkaderes (Kinorhyncha:
Cyclorhagida) in Asia
Andreas Altenburger1*,
Hyun Soo Rho2, Cheon Young Chang3 and Martin
Vinther Sørensen1
1Natural
History Museum of Denmark, University of Copenhagen, Universitetsparken
15, 2100 Copenhagen, Denmark
2Dokdo Research Center, Korean Institute of Ocean
Science and Technology, 767-813 Uljin, South Korea
3Department of Biological Science, College of Natural
Sciences, Daegu University, 712-714 Gyeongsan, South Korea
Abstract
Background: A new kinorhynch
species, Zelinkaderes yong sp. nov., is described from
Korea.
Results: Zelinkaderes
yong sp. nov. is described from coastal, sandy habitats in Korea
by means of light and scanning electron microscopic techniques. The new
species is characterized by the presence of cuspidate spines in
lateroventral positions on segments 2 and 9, ventrolateral positions on
segment 5, and lateral accessory positions on segment 8; flexible tiny
acicular spines in lateroventral positions on segment 2, more
regular-sized lateroventral acicular spines on segment 8, and middorsal
spines on segments 4, 6, 8, 9, and 11. Females furthermore have
acicular spines in middorsal and midlateral positions on segment 10,
whereas males have crenulated spines on this segment. The absence of
acicular spines in the lateral series of segment 9 makes it easy to
distinguish the new species from all previously described congeners.
The new species differs most from Zelinkaderes
submersus, whereas it is morphologically closest to Zelinkaderes klepali. In regard to
the spine patterns, the new species only differs from Z. klepali by its lack of
lateroventral acicular spines on segment 9.
Conclusions: The finding of a new
species of Zelinkaderes in
East Asia extends the distributional range of the genus, which suggests
that the genus basically could be present anywhere in the world and
could be considered as cosmopolitan.
Key words: Biodiversity; Meiofauna;
Morphology; Taxonomy; Zelinkaderidae.
*Correspondence: E-mail: aaltenburger@snm.ku.dk
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