Genus Arrenurus Dugès, 1834

Diagnosis (no family diagnosis available, see Smith 1978): Idiosoma nearly round, moderately flattened dorsoventrally. Dp large, covering almost entire idiosoma and bearing five pairs of setae (setae Mh1 located on dorsal plate). CX­I to III separate from each other. V4 extremely long, whip­like, on small tubercles. Expp variously shaped, but never triangular, setae E1 and E2 slender and less than half as long as plate. Basal segments of chelicerae separated medially. Chela dentate. Legs five­segmented and each leg with three claws.