The legs are dark brown with large, prominent spines.
The main body (or thorax) has at least 12 segments with prominent spines.
Those that live on rocky seabeds are spherical and have prominent, protective spines.
The legs are light brown with black patches and large, prominent spines.
A prominent spine indicates undernutrition and is corrected by increasing the feed.
The females have three prominent spines under the last abdominal segment which gives the genus its name.
The females have two prominent spines under the last abdominal segment.
Conversely, the legs of jumping spiders are not covered with any very prominent spines.
There are roughly 10 prominent spines on the margin of the abdominal shield covering.
The middle and hind legs are very long and have prominent spines.
