The Zaldans were a humanoid species characterized by webbed hands. They were known to the Federation, and information about them was included in the Federation database as early as the mid-23rd century.
As a culture, Zaldans were easily infuriated by courtesy, as they viewed it as a form of phony social behavior designed to cover true feelings. This fact was not lost on Wesley Crusher who, in 2364, entered into a conflict with a Zaldan Starfleet officer on Relva VII named Rondon, when he accidentally collided with him in a corridor. When Rondon became belligerent, Wesley responded in kind, averting a confrontation.
It was later revealed that the incident had actually been staged, as a way to test Wesley's appreciation of cultural complexities, as a part of the Starfleet Academy entrance exam. (TNG: "Coming of Age")
Background information Edit
They were called Maldans in an early version of the Coming of Age script.