Urodacus yaschenkoi

Occupying loose sandy soil habitats and digging a deep spiralling burrow allows this scorpion to live in comfortable conditions in an otherwise inhospitable environment. As free water available above ground is rare due to soaking, this scorpion has developed the ability to suck water from substrate from as little as 1.5% water by mass. Burrows reach a depth of between 250mm and 1000mm, deep enough to reach a level of moisture suitable for osmotic uptake.
The mouth of the burrow as seen above has a steep incline of sand in a cemicircular fashion around the entrance. This facilitates prey capture, as many prey items find the sandy incline too difficult to rapidly escape from, making capture easier for this sit and wait predator.
Burrows are more commonly constructed in open areas away from tree debris, although burrows do occur at times in and around leaf litter. The scorpion works hard to keep the entrance incline loose and free from debris to maintain the highest chance of prey capture.

Scorpions were first caught using small cups as pitfalls outside the burrow entrance. Once caught molten lead was poured down into the burrow to make a cast of the burrow. See the section in features describing Urodacus yaschenkoi's amazing burrow.