Two new species in the Echinoderes coulli group (Echinoderidae, Cyclorhagida, Kinorhyncha) from the Ryukyu Islands, Japan
Two new species belonging to the Echinoderes coulli group are described with their external morphologies and sequences of nuclear 18S rRNA and 28S rRNA genes, and mitochondrial COI gene.The first species, Echinoderes komatsui sp.n., is characterized by absence of acicular spines, and presence of lateroventral tubules on segments 5 and 8, laterodors