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Issue: Vol. 4105 No. 3: 21 Apr. 2016
Type: Article
Published: 2016-04-21
DOI: 10.11646/zootaxa.4105.3.2
Page range: 243–260
Abstract views: 97
PDF downloaded: 6

Tardigrades from Nahuel Huapi National Park (Argentina, South America) with descriptions of two new Macrobiotidae species

Department of Animal Taxonomy and Ecology, Faculty of Biology, Adam Mickiewicz University in Poznań, Umultowska 89, 61-614 Poznań, Poland Laboratorio de Ecología Natural y Aplicada de Invertebrados, Universidad Estatal Amazónica, Puyo, Ecuador
Department of Entomology, Institute of Zoology, Jagiellonian University, Gronostajowa 9, 30-387 Kraków, Poland
Faculty of Biology, Alexandru Ioan Cuza University of Iași, no. 20A, Carol 1st Bd., 700505 Iași, Romania
Department of Animal Taxonomy and Ecology, Faculty of Biology, Adam Mickiewicz University in Poznań, Umultowska 89, 61-614 Poznań, Poland Laboratorio de Ecología Natural y Aplicada de Invertebrados, Universidad Estatal Amazónica, Puyo, Ecuador
Eutardigrada Heterotardigrada Mesobiotus pseudoblocki sp. nov. Minibiotus pseudostellarus sp. nov. Neotropical region new records Río Negro Province taxonomy water bears Tardigrada

Abstract

In 31 samples of mosses and lichens collected in the Argentinean province of Río Negro, 657 tardigrades, 53 exuviae and 219 free-laid eggs were found. In total, 20 species were identified: Diphascon chilenense, Dip. mitrense, Echiniscus bigranulatus, Ech. corrugicaudatus, Ech. merokensis merokensis, Ech. testudo, Hebesuncus mollispinus, Hypsibius convergens, Macrobiotus cf. anderssoni, Mac. andinus, Mac. kazmierskii, Mac. patagonicus, Mesobiotus szeptyckii, Mes. pseudoblocki sp. nov., Milnesium argentinum, Mil. beatae, Mil. brachyungue, Mil. granulatum, Mopsechiniscus granulosus, Minibiotus pseudostellarus sp. nov. Of the two new species, Mesobiotus pseudoblocki sp. nov. is most similar to Mes. blocki, but it differs mainly by the lack of dentate lunules, smaller eggs and presence of reticular design on egg processes. Minibiotus pseudostellarus sp. nov. is most similar to Min. constellatus, Min. eichhorni, Min. sidereus or Min. vinciguerrae, but it differs from them by the presence of ‘pseudo-star’-shaped pores in the dorsal cuticle instead of fully developed ‘stars’ and by other morphometric characters.

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