Campbell R A, Beveridge I
Department of Biology, University of Massachusetts Dartmouth,. North Dartmouth, Massachusetts, USA.
Parasite. 2006 Dec;13(4):275-81. doi: 10.1051/parasite/2006134275.
Pseudochristionella elegantissima sp. nov. (Cestoda: Trypanorhyncha) is described from the spiral valves of the rays Dasyatis brevis (Garman, 1880) and D. longus (Garman, 1880), from the Gulf of California, Mexico. Also described is P. nudisculo sp. nov. from rays Rhinobatos productus Ayres, 1854, D. longus, Myliobatis longirostris Applegate & Fitch, 1964 and Zapteryx exasperat (Jordan & Gilbert, 1880) from the same location. The species are distinguished from one another and from the only existing species within the genus, P. southwelli Campbel & Beveridge, 1990, by differences in the arrangement of bill-hooks on the external surface of the basal swelling of the tentacle and by the number of hooks in each row of the metabasasl armature.
优雅拟克里斯蒂绦虫新种（绦虫纲：旋吻目）是从墨西哥加利福尼亚湾的短尾魟（加曼，1880年）和长尾魟（加曼，1880年）的螺旋瓣中描述的。还描述了来自同一地点的裸核拟克里斯蒂绦虫新种，其宿主为1854年的产魟、长尾魟、1964年的长吻前口蝠鲼和1880年的乔丹氏魟。这些物种通过触须基部肿胀外表面上吻钩的排列差异以及后基部小钩每排中的钩数，与彼此以及该属中唯一现存的物种——1990年的南韦尔拟克里斯蒂绦虫相区分。
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