Engaeus spinicaudatus, the Scottsdale burrowing crayfish, is a species of crayfish in the family Parastacidae. This species is only found in Tasmania, Australia.[2] It is a medium-size burrowing crayfish with an adult carapace length of about 25 millimeters. It usually brown or purplish in color.[2] The species is primarily found in wet buttongrass and healthy plains, but also occurs in surface seepages, floodplains of creeks and wet areas converted to pasture.[2]
The principal threats to this species are clearance of native vegetation and lowering of the water table as a result of forestry and agricultural activities. Other threats include downstream effects and road construction and quarrying and the impacts of inappropriate fire management.[2]