The homeworld of the reclusive Jarada, an insect-like people so exacting about protocol that Picard had to deliver a greeting in their language without a single error in 2364.
Torona IV is the home planet of the Jarada, a reclusive insectoid species with an extreme regard for precision. It features in the first-season Next Generation episode The Big Goodbye.
The Federation has long wanted relations with the Jarada, but an earlier attempt failed when a Starfleet captain mispronounced one word of the required greeting, an insult that closed off contact for twenty years. In 2364 the Enterprise-D is sent to try again, and Picard spends days rehearsing the speech with Troi.
To unwind he visits the holodeck's Dixon Hill programme, which malfunctions after a Jaradan scan of the ship and traps him inside with Data, Beverly Crusher and a historian. He escapes just in time to reach the bridge and deliver the greeting flawlessly.