Herzog Kaylee S, Jensen Kirsten
Department of Ecology and Evolutionary Biology, and the Biodiversity Institute, University of Kansas, Lawrence, Kansas, USA.
Folia Parasitol (Praha). 2017 Feb 6;64:2017.004. doi: 10.14411/fp.2017.004.
A new lecanicephalidean genus is erected for cestodes previously recognised as "New Genus 12" (Polypocephalidae) in a phylogenetic analysis of the interrelationship of members of this order. Examination of the cestode fauna of the mangrove whipray, Urogymnus granulatus (Macleay) (Myliobatiformes: Dasyatidae) from the Solomon Islands and northern Australia revealed the existence of specimens representing two new species, consistent in morphology with "New Genus 12." Corollapex gen. n. is unique among the 24 valid lecanicephalidean genera in its possession of an apical organ in the form of an external retractable central disk surrounded by eight concave muscular, membrane-bound pads and an internal heterogeneous glandular component. The two new species described herein, Corollapex cairae sp. n. (type species) and Corollapex tingoi sp. n., differ from one another in overall size and number of mature and immature proglottids, and are noted to demonstrate a differential distribution between mature and juvenile host individuals. Additional species diversity in the new genus, beyond C. cairae sp. n., C. tingoi sp. n., and "New Genus 12 n. sp. 1" of Jensen et al. (2016) is suggested. Corollapex gen. n. appears to be restricted to dasyatid hosts in the Indo-West Pacific region.
在对该目成员之间的相互关系进行系统发育分析时，为以前被认定为“新属12”（多头科）的绦虫建立了一个新的勒卡尼头科属。对来自所罗门群岛和澳大利亚北部的红树林黄貂鱼（Urogymnus granulatus (Macleay)，鲼形目：黄貂鱼科）的绦虫动物群进行检查后发现，存在代表两个新物种的标本，其形态与“新属12”一致。花冠顶属（Corollapex gen. n.）在所拥有的24个有效的勒卡尼头科属中是独一无二的，它具有一种顶端器官，其形式为一个外部可伸缩的中央盘，周围环绕着八个凹陷的肌肉膜质垫以及一个内部异质的腺性成分。本文描述的两个新物种，花冠顶凯拉种（Corollapex cairae sp. n.，模式种）和花冠顶廷戈种（Corollapex tingoi sp. n.），在总体大小以及成熟和未成熟节片数量上彼此不同，并且注意到它们在成熟和幼年宿主个体之间呈现出不同的分布。除了凯拉种、廷戈种以及延森等人（2016年）的“新属12新种1”之外，该新属中还存在其他物种多样性。花冠顶属似乎仅限于印度 - 西太平洋地区的黄貂鱼宿主。
