Flatworms (phylum Platyhelminthes) Flatworms are found in marine, freshwater, and even damp terrestrial environments. Most are free-living forms, but many are parasitic on other animals.
In the light of examining various other records of land planarians, I have reviewed this record andam now of the opinion that it is a lightly pigmented specimen of Caenoplana sulphurea.
This is a trick specimen to identify. The median paired stripes present the best clue that the species is Caenoplana variegata. The lateral stripes are thin and discontinuous. The species is living up to its specific epithet - variable!
Fletchamia sugdeni does not have longitudinal stripes as in your specimen. Rather it s body is Canary yellow with possibly some suggestion of stripes at the head end. The eye pattern is quite different to Caenoplana.