Wheel spider

[1] The spider escapes parasitic pompilid wasps by flipping onto its side and cartwheeling down sand dunes at speeds of up to 44 turns per second.

The wheel spider does not make a web; it is a nocturnal, free-ranging hunter, coming out at night to prey on insects and other small invertebrates.

[4] Its principal line of defence against predation is to bury itself in a silk-lined burrow extending 40–50 cm deep.

During the process of digging its burrow, the spider can shift up to 10 litres (2.6 US gal) of sand, 80,000 times its body weight.

If the spider is unable to fight off a wasp, and if it is on a sloped dune, it will use its rolling speed of 1 metre per second (3.3 ft/s) to escape.

Burrow