On which segments are the setae located on Cherax destructor claws?
Answer
Arm (merus) and wrist (carpus)
A critical feature used in field identification of the common yabby, especially when distinguishing it from native Western Australian species like the koonac or gilgie, involves tactile examination of the claws. The presence of setae, which are fine hairs, is concentrated specifically on the arm segment, known as the merus, and the wrist segment, known as the carpus, of the large front claws. These setae provide a distinct textural difference compared to other crayfish species that lack this specific hairy covering on those particular proximal parts of the chelae structure.
Related Questions
What is the diagnostic feature of the Cherax destructor rostrum?On which segments are the setae located on Cherax destructor claws?What is the maximum recorded length for the common yabby?How many distinct ridges extend backward from the eyes on the C. destructor head?What coloration do yabbies typically exhibit in turbid or muddy waters?What is the primary function of the four pairs of swimmerets on the yabby thorax?How are the large, enlarged front claws of the yabby frequently described?What physical activity is the scientific epithet destructor referencing for Cherax destructor?Which feature distinguishes the C. destructor rostrum from Cherax quadricarinatus?Which colors are associated with yabbies inhabiting clear waters?