The Scottsdale Burrowing Crayfish (Engaeus spinicaudatus) is a medium-sized burrowing crayfish with an adult carapace length of about 25 mm. It is usually brown or purplish in colour. The Scottsdale Burrowing Crayfish is found north of Scottsdale in north-east Tasmania. The species is primarily found in wet buttongrass and heathy plains, but also occurs in surface seepages, the floodplains of creeks, and wet areas converted to pasture. 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 the downstream effects of road construction and quarrying, and the impacts of inappropriate fire management.