Zootaxa 132: 1-8 (2003) ISSN 1175-5326 (Print Edition) ZOOTAXA 132 Copyright © 2003 Magnolia Press ISSN 1175-5334 (Online Edition)

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Zootaxa 132: 1-8 (2003) ISSN 1175-5326 (Print Edition) ZOOTAXA 132 Copyright © 2003 Magnolia Press ISSN 1175-5334 (Online Edition)

Zootaxa 132: 1-8 (2003) ISSN 1175-5326 (print edition) www.mapress.com/zootaxa/ ZOOTAXA 132 Copyright © 2003 Magnolia Press ISSN 1175-5334 (online edition) Platicrista horribilis, a new species of Tardigrada (Eutardigrada: Hypsibiidae) from Mongolia UKASZ KACZMAREK1 & UKASZ MICHALCZYK2 1 Department of Animal Taxonomy and Ecology, A. Mickiewicz University, Szamarzewskiego 91 a, 60-569 Poznañ, Poland; e-mail: [email protected]; 2 Institute of Environmental Sciences, Jagiellonian University, Ingardena 6, 30-060 Kraków, Poland; e-mail: [email protected] Abstract A new eutardigrade, Platicrista horribilis sp. nov., is described from moss samples collected in Mongolia. This species differs from others of genus Platicrista mainly by having indented lunules on the IV pair of legs. Key words: Tardigrada, Hypsibiidae, Platicrista horribilis sp. nov., Asia, Mongolia, taxonomy, new species Introduction To date only four species of the genus Platicrista Pilato, 1987 have been known (Kath- man, 1990). The new species Platicrista horribilis sp. nov. is described and figures are provided in this paper. Three specimens were found in moss samples from Tehijn Cagan Nuur National Park, Northern Mongolia. Material and Methods Seventy-eight samples of moss and lichens were collected during the expedition of A. Mickiewicz University to Mongolia in July and August 2000. Moss samples were put into small paper bags and allowed to dry slowly. Subsequently, in the laboratory, each sample was soaked in water for 6 hours. Then the water with the tardigrades and detritic particles was decanted and the supernatant was examined with a stereomicroscope. Three samples contained 3 specimens of a previously not described species of tardigrade. Specimens were mounted on microscopic slides in Hoyer’s medium. Accepted: 3 January 2003; published: 17 January 2003 1.

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