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Revision of the Echiniscus bigranulatus group with a description of a new species Echiniscus madonnae (Tardigrada: Heterotardigrada: Echiniscidae) from South America

. Zootaxa. 1154, 1 (Mar. 2006), 1–26. DOI:https://doi.org/10.11646/zootaxa.1154.1.1.