31. We now know ( whether we knew it before ) that flatworms can get cancer. 32. Unfortunately, possibly due to the flatworm , the native tree-snails also became extinct. 33. Platyhelminthes ( flatworms ) form another worm phylum which includes a class Cestoda of parasitic tapeworms. 34. The flatworms " haemocoel in an act known as intradermal hypodermic insemination, or traumatic insemination. 35. In 2015, the land flatworm " Platydemus manokwari " was reported from Miami. 36. The species is a host for the parasitic flatworm , " Phaneropsolus oviforme ". 37. "Diplozoon paradoxum " are hermaphroditic flatworms that live on gills of freshwater fishes. 38. This is the work of the lowest species on earth, lower than flatworms aswim in swill. 39. Other species that display this trait include parasitoid wasps, certain flatworms , and various aquatic invertebrates. 40. A genus of parasitic flatworms responsible for a highly significant group of infections in humans termed schistosomiasis.