These weta also have no tympanum , and instead are able to detect sound through their cuticle , which is adaptive for their underground lifestyle .
The males of this species can be identified by blackened hooks on the last tergite .
These weta also have no tympanum , and instead are able to detect sound through their cuticle , which is adaptive for males ' underground lifestyle .
The males of this species can be identified by blackened hooks on the last tergite .