Taeniidae parasites are distinguished by their terrestrial life cycles, which include a dormant stage called a metacestode. These develop in the intermediate host's tissue when eggs are consumed. The eggs hatch into a oncosphere, which pass through the intestinal walls and form the metacestode. An example is either cysticercoid, cysticercus, or a hydatid cyst. The definitive host is infected when the metacestode is consumed.