Tricomia is a Catholic titular see

Titular see

A titular see in various churches is an episcopal see of a former diocese that no longer functions, sometimes called a "dead diocese". The ordinary or hierarch of such a see may be styled a "titular bishop", "titular metropolitan", or "titular archbishop"....

. The original diocese was a suffragan of Caesarea in Palaestina Prima. It is mentioned in George of Cyprus and, according to the other cities preceding or following its name, would seem to have been situated in southern Palestine.

Malalas relates an ancient legend regarding Tricomia, which he calls Nyssa and confounds with Scythopolis. According to his account it was the site of a famous temple of Artemis

Artemis

Artemis was one of the most widely venerated of the Ancient Greek deities. Her Roman equivalent is Diana. Some scholars believe that the name and indeed the goddess herself was originally pre-Greek. Homer refers to her as Artemis Agrotera, Potnia Theron: "Artemis of the wildland, Mistress of Animals"...

.

It was never a Greek Orthodox see, and Le Quien is at fault in his complaint of being unable to find any bishops. The Roman Curia

Roman Curia

The Roman Curia is the administrative apparatus of the Holy See and the central governing body of the entire Catholic Church, together with the Pope...

, taking the Descriptio orbis romani of George of Cyprus, a civil document, for a Notitia episcopatuum, made Tricomia a titular see.

It is now a village called Terkoumieh on a high hill between Hebron

Hebron

Hebron , is located in the southern West Bank, south of Jerusalem. Nestled in the Judean Mountains, it lies 930 meters above sea level. It is the largest city in the West Bank and home to around 165,000 Palestinians, and over 500 Jewish settlers concentrated in and around the old quarter...

 and Bet-Djibrin. It must not be confused with another Tricomia in Arabia which was the camping place of the equites promoti Illyriciani.