Arrenurus niger n. sp.

Zoobank: 6594C44B-779D-49E2-9883-C94264877A36

(Figure 7)

Material examined — Holotype male, Río Negro near General Conesa, Río Negro Province, Argentina, 40°5’19,19” S, 64°29,6’6, 11” W, 9-xii-1999 (MBR) . Paratypes: one female (MBR), 2 males (juveniles), eight females (RMNH), same data as holotype.

Diagnosis — P2 with a patch of setae. Male: Cauda short, distinctly set off from idiosoma; dorsal shield incomplete. Female: genital plates short and broad.