Kanthan Cave trapdoor spider (Liphistius kanthan)
Critically endangered on the IUCN Red List.
Liphistius kanthan is known from one limestone cave in Malaysia. It builds a trap on the wall or floor of the cave, and camouflages it with mud. Hiding inside the trap, it rests its legs on several threads of silk that act as trip wires. When a prey item walks over a trip wire, the spider jumps out and pulls it into the trap. The spider can also escape from predators through a back door in the trap.
The main threat to L. kanthan is limestone quarrying around the cave. The effects that the quarrying may have on light, air flow, and humidity in the cave are unknown, but they are believed to have a detrimental effect on this species.
There are currently no conservation measures targeting L. kanthan. However, there may be plans to protect temples around the cave from quarrying, which may also benefit this spider.