Soil tardigrades from the Antarctic Peninsula with a description of a new species and some remarks on the genus Ramajendas ( Eutardigrada: Isohypsibiidae)

In thirteen (mostly soil) mixed samples, collected from nine localities on the Antarctic continent and some of the neighbouring islands, 788 specimens and 32 eggs of tardigrades were found. In total, five species were identified: Acutuncus antarcticus, Echiniscus jenningsi, Diphascon (D.) victoriae,...

Full description

Bibliographic Details
Published in:Polar Record
Main Authors: Kaczmarek, Ł., Janko, K. (Karel), Smykla, J., Michalczyk, L.
Format: Article in Journal/Newspaper
Language:English
Published: 2014
Subjects:
Online Access:https://doi.org/10.1017/S0032247413000168
http://hdl.handle.net/11104/0233472
Description
Summary:In thirteen (mostly soil) mixed samples, collected from nine localities on the Antarctic continent and some of the neighbouring islands, 788 specimens and 32 eggs of tardigrades were found. In total, five species were identified: Acutuncus antarcticus, Echiniscus jenningsi, Diphascon (D.) victoriae, Hypsibius dujardini and Ramajendas dastychi sp. nov. A. antarcticus was the most abundant (nearly 90% of all specimens) and was the prevailing taxon found in the majority of locations. R. dastychi sp. nov. is the fourth species described in the exclusively Antarctic/sub-Antarctic genus. The new species differs from all other congeners by the presence of four gibbosities on the caudo-dorsal cuticle (configuration II:2-2) and also by some morphometric characters. In this paper we also briefly discuss the taxonomy and zoogeography of the genus Ramajendas.