- Star Trek: The Motion Picture
- Star Trek II: The Wrath of Khan
- Star Trek III: The Search for Spock
- Star Trek IV: The Voyage Home
- Star Trek V: The Final Frontier
- Star Trek VI: The Undiscovered Country
- Star Trek Generations
Apart from the Terran leeches and the Aldebaran mud leeches he keeps for medicinal purposes in Sickbay, Dr. Phlox keeps this small, shroudlike variety of blood-sucking parasite from an unspecified planet in a jar in the galley — as both an edible snack for sandwiches or salads and a natural laxative.