On the surface of the tegument are also small spines. The adult flatworm has an oval shape body with spines covering its thick tegument. It is entirely covered by a tegument. The body is covered with a tegument. The envelope is joined to the capsid by means of a tegument. Praziquantel has been used to effectively treat paragonimiasis by separating the tegument. Acanthocephalans do not have digestive tracts and absorb nutrients through the tegument, the external layer. Its tegument is fully covered with spine. It is whitish in colour, highly elongated, dorsoventrally flattened, and entirely covered with a tegument. But they are quickly removed the tegument itself is shed every few hours. Along with a thick tegument, these flukes were also found to have bacteria on them. This feature is consistent with the tegument appearance of other terminally spined schistosomes. A large number of important enzymes has been detected in the tegument. The tegument bears a large number of small tubercules. The tegument is infected by several species of mites.