The Jarada were a reclusive, insect-like species from the Jaradan sector. The Jarada were known for their idiosyncratic attitude toward protocol and especially for their peculiar language. The slightest mispronunciation of their language by an outsider was regarded as an insult.
2344 marked a bad encounter with the Federation, who regarded them as strategically important. A slip in the pronunciation of the greeting by their representative, a starship captain, caused a twenty-year rift between the two governments. Reports from the contact existed only in the form of record tapes, which graphically demonstrated what happened when that ship's captain offended the Jaradan.
In 2364, the USS Enterprise-D conducted a diplomatic mission to the Jarada, where Jean-Luc Picard was to make a brief but necessary contact with them, in an attempt to mend their rift. In order to have a successful contact with the Jaradans, they demanded a precise greeting by the Federation's emissary.
Upon approach of the Jaradan sector, one of their long-range probes disrupted the holodeck systems on the ship. Following their probe, they sent a subspace message to the Enterprise, requesting to speak with Picard, who was, unfortunately trapped in the now malfunctioning holodeck. His first officer Commander Riker attempted to explain the delay to the Jarada, but they refused to speak to a mere subordinate.
Fortunately, by the time the Enterprise achieved orbit of the Jaradan homeworld, Picard was able to overcome the delay and successfully make the delivery. In doing so, he honored the Jaradans with his words of greeting, and allowed a new day to dawn between the two governments. (TNG: "The Big Goodbye")
The Jaradan voice heard in "The Big Goodbye" was provided by an unknown performer and technically altered. The "J" in Jarada was pronounced as an "H" (as in Spanish), and the species name was pronounced "Ha-RA-da". In the script for "The Big Goodbye", the Jarada were intended to appear, but budget restrictions prevented this. (Star Trek: The Next Generation Companion) The script described them as "wasp-like; black and yellow, with pointed insectile features and waving black antennae."  "The Big Goodbye" author Tracy Tormé described the Jarada as a species which was living in large beehives. When they're talking the voice of a man, a woman, and a child sounds. But the final episode had them sounding like Alvin and the Chipmunks. (Creating the Next Generation, p. 50)
A revised final draft of the script of the "The Big Goodbye", StarTrek.com, and the Star Trek Encyclopedia (4th ed., vol. 1, p. 384), in the entry for Jarada, identified Torona IV as the homeworld of the Jarada, but the finished script just said the species was from the Jaradan sector. Still, in the final episode the destination of the USS Enterprise-D appeared to be a planet, and this planet might be intended to represent Torona IV.