The Discovery of Two New Tardigrade Species from the Family Macrobiotidae

Two new tardigrade species, one representing the Macrobiotus hufelandi complex and one – the Paramacrobiotus richtersi complex are described by means of integrative taxonomy. Macrobiotus crustulus sp. nov. from French Guiana is the most similar to Macrobiotus martini Bartels, Pilato, Lisi and Nelson, 2009, Macrobiotus santoroi Pilato and D'Urso, 1976, but differs from them mainly by having the lissostomus type of the oral cavity armature (teeth not visible under light microscopy) and well developed, convex terminal discs of egg processes covered with evident granulation. Paramacrobiotus filipi sp. nov. from the Malaysian part of Borneo is the most similar to Paramacrobiotus alekseevi (Tumanov, 2005), but differs from it primarily by the presence of body granulation visible under light microscopy and by the presence of sculptured and porous areoles around egg processes.

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