Macrobiotus arcticus Murray (Heinis 1914)
Terra typica: Antarctica (Antarctica)
Argentina:
• 39 ° 12 ′S, 70 ° 55 ′W; 900 m asl: Neuquén Province, Aluminé, Rucachoroi Lake, moss on soil. Rossi et al. (2009)
• Undefined location in Tierra del Fuego. Claps et al. (2008)
Colombia:
• 07°09′N, 75 ° 23 ′W; 1,400 m asl: Antioquia Department, Cafetal La Camelia, hepatic (Frullania evolita Steph.), lichens and leaves. Heinis (1914)
Record numbers: Argentina: 1, Colombia: 1; total: 2.
Remarks: The Argentine examples were described as exhibiting the characters described in Dastych (1991) but there is no information on the eggs, which would confirm the identification. Heinis (1914) describes “eggs with blunt thorns like projections surrounded by a hyaline skin”, similar to that describes for Acutuncus antarcticus. These South American records require confirmation.