Schaeffner B C
Instituto de Biociências, Universidade de São Paulo, Rua do Matão, 321, 05508-090 Cidade Universitária, São Paulo, SP, Brazil; and Water Research Group, Unit for Environmental Sciences and Management, North-West University, Private Bag X6001, Potchefstroom, 2520, South Africa.
J Parasitol. 2018 Dec;104(6):685-696. doi: 10.1645/17-5. Epub 2018 Sep 12.
Species of the eutetrarhynchid genus Hispidorhynchus Schaeffner and Beveridge, 2012 possess an uncinate macrohook on the bothrial surface of the basal swelling of each tentacle. This unique feature of the oncotaxy is only shared with the closely related genus Oncomegas Dollfus, 1929 . A new species of Hispidorhynchus is described from specimens infecting Styracura schmardae (Werner, 1904) (Potamotrygonidae) from the western Caribbean Sea off the coast of Belize and Panama. Hispidorhynchus styracurae n. sp. differs from its 3 congeners in the possession of smaller and narrower bulbs, fewer principle hooks in the metabasal armature, size of the macrohook, and different scolex proportions. Scanning electron microscopy reveals new information on the microthrix morphology of the genus. A diagnostic key for the differentiation of species of Hispidorhynchus is provided. In addition, new host and locality records are reported for Oncomegas wageneri ( Linton, 1890 ) Dollfus, 1929 , collected from Hypanus guttatus (Bloch and Schneider, 1801) (Dasyatidae) off the coast of Maceió, Alagoas (Brazil). This considerably expands the geographical distribution of this species in the western Atlantic Ocean.
2012年，谢夫纳和贝弗里奇描述的真四吻科希氏吻钩属物种，其每个触手基部肿胀的吸沟表面都有一个钩状大钩。这种独特的瘤序特征仅与亲缘关系密切的1929年的翁氏属共有。从感染伯利兹和巴拿马海岸附近西加勒比海的施氏星鲼（维尔纳，1904年）（江魟科）的标本中描述了一种新的希氏吻钩属物种。施氏希氏吻钩新种与其3个同属物种的区别在于，它有更小、更窄的球茎，后基部的主要钩更少，大钩的大小，以及不同的头节比例。扫描电子显微镜揭示了该属微毛形态的新信息。提供了希氏吻钩属物种鉴别的诊断关键。此外，还报告了1929年多尔福斯描述的翁氏瓦氏吻钩从巴西阿拉戈斯州马塞约海岸的斑点黄貂鱼（布洛赫和施奈德，1801年）（魟科）采集的新宿主和地点记录。这大大扩展了该物种在西大西洋的地理分布。
