The female of
Tmarus natalensis remains unknown, as the single female specimen mentioned in early literature was subsequently lost. The male has a total length of 5.5 mm, with a
cephalothorax length of 2.5 mm and width of 2.2 mm. The
carapace coloration ranges from fawn to dark brown, while the
opisthosoma is dark brown with a white ventral surface marked by a dark broad median line. The legs are fawn-colored with black mottling. The carapace is slightly longer than wide, with an almost straight anterior eye row and a recurved posterior eye row. ==Conservation==