Milnesium cfr. tardigradum (Milnesiidae, Apochela, Tardigrada): a monitor of high altitude meiofauna on sub-Antarctic Marion Island

The meiofaunal tardigrades Milnesium cfr. tardigradum, Echiniscus sp., and Macrobiotus sp. were extracted from high altitude moss and volcanic scoria samples on sub-Antarctic Marion Island. Gut contents of mounted Milnesium provided forensic evidence of a previously ignored diverse and abundant meiofauna including trophi of bdelloid rotifers, mouthparts and entire individuals of Diphascon sp. (Tardigrada).