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DOI: http://dx.doi.org/10.11646/zootaxa.4363.1.4

The Macrobiotus hufelandi group (Tardigrada) revisited

ŁUKASZ KACZMAREK, ŁUKASZ MICHALCZYK

Abstract


Species of the Macrobiotus hufelandi group are one of the most often recorded tardigrades throughout the globe. For over a century M. hufelandi has been considered cosmopolitan but in recent decades numerous species of similar morphologies have been described from various continents, which suggests that what was originally defined as a single taxon is, in fact, a complex of species. The definition of the hufelandi group is subject to a long-standing discussion and in this paper we propose a refined set of characters that are hoped to elucidate the taxonomic status of the group. In order to aid interspecific comparisons, we also propose a unified nomenclature for the crucial morphological traits and clar

 


Keywords


Tardigrada, chorion, egg shell, diagnostic key, Eutardigrada, Macrobiotidae, morphology, morphometry, nomenclature, Parachela, systematics, taxonomy

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ISSN 1175-5326 (Print Edition) & ISSN 1175-5334 (Online Edition)
Published by Magnolia Press, Auckland, New Zealand
A founding journal of Biotaxa