The many spines and setae and the disruptive coloration of the carapace of this species makes it hard to see structures up close. This is a dorsal view of the carapace, with the head facing right. The two eyes can be seen on the right. Between them is the small rostrum, then the mid-dorsal ridge runs back to the left. The first mid-dorsal spine is visible in the light area at the left of the picture. In front of the mid-dorsal spine and directly behind the eyes on each side is a single sub-median spine on each side, colored light brown and just to the left of center in this view.
This side view of abdominal segments 2-4 shows that there are no ventrally-directed spines on segments 1-3 and no prominant longitudinal mid-dorsal ridge on segments 3-5. The first and third pleura have a depression that the larger 2nd pleuron fits over.
