in the tetraphyllidean life cycle is not well known; whales and dolphins may be definite or dead-end hosts.
bothridia ("sucking grooves") on its scolex.[2] Its proglottids, which are the segments of tapeworms that contain the reproductive structures, are longer than wide when immature, and become wider than long at maturity.[2] However, the proglottids at each stage are generally the same shape.[2]C. antonioi also have crenulated bothridial margins and a microthrix pattern that varies from other species in Crossobothrium.[2] The most notable and unique quality of C. antonioi is the large amount of testes per mature proglottid.[2]C. antonioi has more than 700 testes per proglottid, whereas other Crossobothrium species have ~150-300 testes per proglottid.[2]
