Euastacus vesper
Critically Endangered.
The Cudgegong Giant spiny Crayfish (Euastacus vesper) (photo: McCormack and Ahyong 2017)
Some of the characteristics of the Cudgegong Giant Spiny Crayfish are:
Other Euastacus species such as E. armatus (Murray Crayfish) and E. spinifer (Giant spiny crayfish), however is distinguishable from these species on the basis of colouration and spine patterns.
The Cudgegong Giant Spiny Crayfish has been documented to reach at least 71.6mm occipital carapace length.
Cudgegong Giant Spiny Crayfish is known from five sites across a restricted area in the upper Macquarie-Bogan Rivers Basin in NSW. It has been recorded at altitudes between 743m and 1123m above sea level.
Report a Cudgegong Giant Spiny Crayfish sighting
It is believed that larger Cudgegong Giant Spiny Crayfish prefer deeper water whilst juveniles prefer the shallow margins and under rocks along the side of riffles. Another key habitat attribute is undercut banks with overhanging vegetation cover.
Figure 3. Habitat of E. vesper, upper Cudgegong River, Coricudgy State Forest, NSW (McCormack and Ahyong 2017).