Arrenurus oxyurus Ribaga, 1902

Material examined— Argentina. Río Negro Province: 1/2/0, Río Negro near General Conesa, 40°5’19,19” S, 64°29,6’ 6,11” W, 9-xii-1999.

Distribution — Previously known from Argentina (Ribaga 1902, 1903, Rosso de Ferradás et al. 1987, Rosso de Ferradás 1987) and Paraguay (Lundblad 1944).