Description, redescription and revision of sixteen putatively closely related species of Echinoderes (Kinorhyncha: Cyclorhagida), with the proposition of a new species group – the Echinoderes dujardinii group - Sørensen, M. V.; Goetz, F. E.; Herranz, M.; Chang, C. Y.; Chatterjee, T.; Durucan, F.; Neves, R. C.; Yildiz, N. Ö.; Norenburg, J.; Yamasaki, H. (European Journal of Taxonomy, 2020)