- 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
One of Phlox's menagerie of creatures. The Lyssarrian Desert Larvae secretes viral suppressants that can be used as a salve for cuts and bruises. Also, when implanted with DNA from another species, it can exactly replicate that species' life cycle at a rapidly accelerated rate. Phlox used this method to create Trip's clone, Sim.