Pentaloculum Alexander, 1963

Bueno, Veronica M. & Caira, Janine N., 2023, Phylogenetic relationships, host associations, and three new species of a poorly known group of “ tetraphyllidean ” tapeworms from elasmobranchs, Zootaxa 5254 (1), pp. 30-50 : 38

Genus Pentaloculum Alexander, 1963 emended

Emendation. The revised diagnosis of this genus presented by Eudy et al. (2019) should be emended as follows to accommodate this new species. Additions are indicated in bold.

“Tetraphyllidea’’: Clade 1 of Caira et al. (2017). Scolex with four bothridia; each bothridium divided into five large facial loculi approximately equal in size, arranged as one anterior loculus followed by two consecutive pairs of loculi; septum dividing anterior pair of loculi slightly offset laterally from septum dividing posterior pair of loculi. Myzorhynchus lacking; cephalic peduncle present or absent. Strobila craspedote, hyperapolytic or apolytic. Genital pores lateral, irregularly alternating. Testes numerous, entirely anterior to ovary; postporal testes absent. Ovary posterior, inverted-A or H-shaped in frontal view, bilobed in cross-section. Vagina opening into genital atrium anterior to cirrus sac. Vitelline follicles in two lateral bands; bands consisting of two or more columns of follicles, confluent posterior to the ovary. Uterus saccate. Parasites of Typhlonarke and Parascylliidae ; Pacific Ocean. Type species: Pentaloculum macrocephalum Alexander, 1963 . Additional species: P. hoi Eudy, Caira and Jensen, 2019 , P. grahami n. sp.