What specific marking is found at the very terminus of the blunt tail of *Rena humilis*?
Answer
A tiny, sharp point or spine
While the overall shape of the tail terminus of the Western Blind Snake is blunt and rounded, closer examination reveals a crucial diagnostic feature typical of the *Rena* genus. At the very end of the tail, there is a small, sharp point or spine present. This terminal spine serves a functional purpose related to locomotion, specifically assisting the snake in anchoring its body slightly while maneuvering through confined underground spaces. It is important to note that this spine is not employed defensively in the manner of a sharp stab or a rattle.
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