Data from: Phylogenetic taxonomy, a farewell to species, and a revision of Heteropodarke (Hesionidae, Polychaeta, Annelida)

Cladistic relationships between 7 parts of the hesionid polychaete group Heteropodarke are assessed in a parsimony analysis based on 34 morphological characters. Taxon names are defined by apomorphy-based phylogenetic definitions, without reference to Linnean ranks or types. Species entities are omitted and denied any role in taxonomy; taxon names refer to monophyletic groups only. Linnean binomial species names are not employed, and all taxa are assigned uninomials. Previously known parts of Heteropodarke (Africana Hartmann-Schröder, 1974; Formalis, Perkins, 1984; Heteromorpha Hartmann-Schröder, 1962; Lyonsi Perkins, 1984; Xiamenensis Ding, Wu, and Westheide, 1997) are reexamined, and Bidentata, new taxon, and "Zmyrina" (informal name) are described from Papua New Guinea and Belize, respectively. The new taxon Crassichaetae is named for a subgroup of Heteropodarke, which is diagnosed by enlarged, anteriorly situated falcigers, and includes Africana, Heteromorpha, Lyonsi, and Xiamenensis. Within this group Africana and Heteromorpha are treated as taxa inquirendae.本研究针对叶须虫科（Hesionidae）多毛类异足虫属（Heteropodarke）类群的7个分支间的支序分类关系，通过基于34个形态学性状的简约法分析（parsimony analysis）进行解析。分类单元名称采用基于衍征的系统发育定义（apomorphy-based phylogenetic definition）进行界定，不涉及林奈分类等级或模式标本；物种实体被排除且不承担任何分类学作用，分类单元名称仅对应单系群。本研究未使用林奈双名法物种名称，所有分类单元均采用单名式命名。此前已被记录的异足虫类群分支包括：Africana Hartmann-Schröder, 1974、Formalis Perkins, 1984、Heteromorpha Hartmann-Schröder, 1962、Lyonsi Perkins, 1984以及Xiamenensis Ding, Wu, Westheide, 1997，本研究对其进行了重新检视；此外分别从巴布亚新几内亚和伯利兹描述了新分类单元Bidentata以及非正式类群"Zmyrina"。新分类单元Crassichaetae被划定为异足虫属的一个亚群，其鉴别特征为具有膨大且位于前端的镰状刚毛（falcigers），该亚群包含Africana、Heteromorpha、Lyonsi以及Xiamenensis。在该亚群中，Africana与Heteromorpha被视为待考分类群（taxa inquirendae）。