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The Ariolo were a sentient centaur-like species, whose homeworld was a member of the United Federation of Planets by the late 23rd century.


In 2286, the Ariolo were represented by two ambassadors on the Federation Council. (Star Trek IV: The Voyage Home)

Ariolo were present on Tulgana IV in 2380, including one operating a weapons shop in the Little Qo'noS district. (LD: "Envoys")

In 2381, an Ariolo was present at the Bonestell Recreation Facility. (LD: "We'll Always Have Tom Paris")


The Ariolo had four legs and two arms with three-fingered hands. Their torsos extended above their front legs. They also had short tails. (LD: "Envoys")

They had a tough, almost leathery skin that was usually a dark gray, green or brown in color. They had angular heads that sloped upwards from a low forehead to the rear of the cranium. The jaw was angled down so that the mouth, which reversed the angular pattern to slope upward away from the line of the jaw and forehead, protruded slightly away from the face. (Star Trek IV: The Voyage Home)



Background information

The name of this species comes from FASA's Star Trek IV Sourcebook Update. While strictly a non-canon source, it is the only widely recognized source for names of most of the Star Trek IV aliens.

According to that source, the Ariolo had centaur-like torsos, which was eventually revealed in Star Trek: Lower Decks. They were also described as a hedonistic race who are reputed to be the best musicians in the galaxy. They are the only race known to the Federation that has no concept of time.

Their homeworld was called Fillandia, a tidally locked planet that was plagued by earthquakes and volcanoes. It was described as a large, humid world, dominated by tropical forests and mountain ranges.

The Ariolo were mentioned on a plaque affixed to a specimen tank found in the mirror universe's Paul Stamets laboratory aboard the ISS Charon. The tank contained bone tissue samples from this terrestrial species. [1]

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