Summary:

- The article discusses the discovery of a new species of tree-dwelling crab in the forests of Vietnam. This crab, named Phryganistria vietnamensis, is the largest known tree-dwelling crab in the world, measuring up to 10 inches in length.

- The crab was discovered by a team of researchers from the Vietnam Academy of Science and Technology and the Zoological Society of London. They found the crab living high up in the canopy of the forests, where it uses its large claws to move between branches and feed on leaves and other vegetation.

- The discovery of this new species highlights the ongoing biodiversity exploration in the forests of Southeast Asia, and the importance of conserving these habitats to protect the many undiscovered species that may be living there.