Which feature distinguishes the C. destructor rostrum from Cherax quadricarinatus?
Answer
C. destructor rostrum lacks spines or extended keels
When performing morphological comparisons between the common yabby and related species like the Australian Red Claw crayfish (*Cherax quadricarinatus*), the rostrum provides a clear differentiator. While *C. quadricarinatus* typically exhibits keels extending backward from the four head ridges, the rostrum of *C. destructor* is characterized by its smooth, relatively short structure. The specific absence of spines or pronounced raised edges on the *C. destructor* rostrum serves as a key diagnostic feature separating it from the Red Claw species.
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