WoRMS source details
Ruhnke, T. R. (1994). Paraorygmatobothrium barberi n. g., n. sp. (Cestoda: Tetraphyllidea), with amended descriptions of two species transferred to the genus. Systematic Parasitology. 28(1): 65-79.
199154
10.1007/bf00006910 [view]
Ruhnke, T. R.
1994
Paraorygmatobothrium barberi n. g., n. sp. (Cestoda: Tetraphyllidea), with amended descriptions of two species transferred to the genus
Systematic Parasitology
28(1): 65-79
Publication
Available for editors
[request]

Paraorygmatobothrium n.g. (Cestoda: Tetraphyllidea) differs from all other phyllobothriid genera in having serrated microtriches on the proximal bothridial surfaces, two dorsal and two ventral scutes on the neck, and the presence of very small (<500 nm) triangular structures on the surface of the neck. No single light microscopical feature is sufficient to distinguish the new genus from other phyllobothriid genera. Phyllobothrium prionacis from Prionace glauca and Anthobothrium exiguum from Alopias vulpinus are transferred to the new genus and their descriptions are amended. Paraorygmatobothrium barberi n. sp. from Triakis semifasciata is also described, and can be distinguished from the other two species in being longer, having a greater number of segments, longer and wider mature segments, a greater number of testes, a longer cirrus-sac, a longer and wider ovary, a wider ovicapt, and a greater number of rows of dorsal and ventral vitelline follicles than the other two species. It also differs in the shape of the egg-shell and in the possession of a circular band of sub-tegumentary muscles in the middle third of each bothridium. Two of the species placed in the new genus have microtriches resembling an “ear of corn” on the distal bothridial surface. These microtriches are similar to structures reported for Phyllobothrium squali from the Squalus acanthias and Orygmatobothrium musteli from Mustelus henlei; this similarity in microtriche structure potentially indicates a systematic relationship between members of Paraorygmatobothrium and these two species.
Date
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Paraorygmatobothrium Ruhnke, 1994 accepted as Scyphophyllidium Woodland, 1927 (original description)
Paraorygmatobothrium barberi Ruhnke, 1994 accepted as Scyphophyllidium barberi (Ruhnke, 1994) Caira, Jensen & Ruhnke in Caira, Jensen, Hayes & Ruhnke, 2020 (original description)
Paraorygmatobothrium exiguum (Yamaguti, 1935) Ruhnke, 1994 accepted as Scyphophyllidium exiguum (Yamaguti, 1935) Caira, Jensen & Ruhnke in Caira, Jensen, Hayes & Ruhnke, 2020 (new combination reference)
Paraorygmatobothrium exiguum (Yamaguti, 1935) Ruhnke, 1994 accepted as Scyphophyllidium exiguum (Yamaguti, 1935) Caira, Jensen & Ruhnke in Caira, Jensen, Hayes & Ruhnke, 2020 (redescription)
Paraorygmatobothrium prionacis (Yamaguti, 1934) Ruhnke, 1996 accepted as Scyphophyllidium prionacis (Yamaguti, 1934) Caira, Jensen & Ruhnke in Caira, Jensen, Hayes & Ruhnke, 2020 (new combination reference)
Paraorygmatobothrium prionacis (Yamaguti, 1934) Ruhnke, 1996 accepted as Scyphophyllidium prionacis (Yamaguti, 1934) Caira, Jensen & Ruhnke in Caira, Jensen, Hayes & Ruhnke, 2020 (redescription)
Paraorygmatobothrium barberi Ruhnke, 1994 accepted as Scyphophyllidium barberi (Ruhnke, 1994) Caira, Jensen & Ruhnke in Caira, Jensen, Hayes & Ruhnke, 2020 (original description)
Paraorygmatobothrium exiguum (Yamaguti, 1935) Ruhnke, 1994 accepted as Scyphophyllidium exiguum (Yamaguti, 1935) Caira, Jensen & Ruhnke in Caira, Jensen, Hayes & Ruhnke, 2020 (new combination reference)
Paraorygmatobothrium exiguum (Yamaguti, 1935) Ruhnke, 1994 accepted as Scyphophyllidium exiguum (Yamaguti, 1935) Caira, Jensen & Ruhnke in Caira, Jensen, Hayes & Ruhnke, 2020 (redescription)
Paraorygmatobothrium prionacis (Yamaguti, 1934) Ruhnke, 1996 accepted as Scyphophyllidium prionacis (Yamaguti, 1934) Caira, Jensen & Ruhnke in Caira, Jensen, Hayes & Ruhnke, 2020 (new combination reference)
Paraorygmatobothrium prionacis (Yamaguti, 1934) Ruhnke, 1996 accepted as Scyphophyllidium prionacis (Yamaguti, 1934) Caira, Jensen & Ruhnke in Caira, Jensen, Hayes & Ruhnke, 2020 (redescription)
Japanese Exclusive Economic Zone for Paraorygmatobothrium exiguum (Yamaguti, 1935) Ruhnke, 1994
Pacific Coast of the United States for Paraorygmatobothrium barberi Ruhnke, 1994
United States part of the North Atlantic Ocean for Paraorygmatobothrium exiguum (Yamaguti, 1935) Ruhnke, 1994
United States part of the North Atlantic Ocean for Paraorygmatobothrium prionacis (Yamaguti, 1934) Ruhnke, 1996
Pacific Coast of the United States for Paraorygmatobothrium barberi Ruhnke, 1994
United States part of the North Atlantic Ocean for Paraorygmatobothrium exiguum (Yamaguti, 1935) Ruhnke, 1994
United States part of the North Atlantic Ocean for Paraorygmatobothrium prionacis (Yamaguti, 1934) Ruhnke, 1996