Unusual telson of C. hystrix.
This tiny mantis shrimp has a very unusual telson, covered with minute hooks that resemble velcro. Some related species also have elaborations on the telson. Echinosquilla has distinct spikes that seem to mimic a sea urchin when used to block the burrow entrance, while Chorisquilla thomassini has tinier hooks that pick up detritus and seem to act as camouflage. C. hystrix seems to be somewhere in the middle without an obvious function. Perhaps the spikes help to absorb the impact of blows during competition.