Raillietina tetragona

Raillietina tetragona is a type of tapeworm, specifically known as a cestode that is an internal parasite of chickens. R. tetragona is a 100-250 mm (4-10 in) long flattened, segmented, ribbon-shaped worm that invades the chicken's gastrointestinal system, most commonly found in the lower intestines.

Raillietina Life cycle: R. tetragona has an indirect life cycle, using beetles as intermediate hosts. Chickens become infected by consuming the R. tetragona eggs shed in the feces of infected chickens or infected ants.