Pennella plumosa (Dekay, 1844)

Not valid. Described from a damaged specimen from Diodon pilosus (= D. holocanthus) (Dekay 1844). Wilson (1917) considered P. plumosa to be a synonym of P. sagitta, but this species does not parasitize Diodon . The brief description of the incomplete parasite indicates that the specimen is likely P. diodontis . Considered herein a synonym of P. diodontis .