ABSTRACT The genus Papawera includes two species of haminoeid snails found only in temperate waters of New Zealand and southeastern Australia. In this work, we redescribe the Papawera species based on characters of their external morphology, shells, and anatomical features such as radulae, jaws, gizzard plates, and male reproductive systems, using for the first time, scanning electron microscopy. A multi-locus phylogenetic hypothesis and the species delimitation method Automatic Barcode Gap Discovery based on DNA sequences of the cytochrome c oxidase subunit I gene were used to corroborate species status. The type species of the genus, P. zelandiae, is restricted to New Zealand and P. maugeansis is only known from South Australia, Victoria, and Tasmania. These species are easily distinguished externally by the shape of the shell, colouration of the living animal, and morphology of the cephalic shield. Anatomically they have differences in the number of marginal teeth, distribution of rods in the gizzard plates, and anatomy of the fundus in the male reproductive system.

中文翻译：

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温带澳大拉西亚属 Papawera Oskars 和 Malaquias，2019（腹足纲：Cephalaspidea：Haminoeidae），重新描述了 P. zelandiae 和 P. maugeansis

摘要 Papawera 属包括两种仅在新西兰和澳大利亚东南部温带水域发现的 haminoeid 蜗牛。在这项工作中，我们首次使用扫描电子显微镜根据其外部形态、壳和解剖学特征（如齿根、颌骨、胼胝板和雄性生殖系统）重新描述了木瓜属物种。基于细胞色素 c 氧化酶亚基 I 基因的 DNA 序列的多位点系统发育假设和物种定界方法自动条码间隙发现被用于证实物种状态。该属的模式种 P. zelandiae 仅限于新西兰，而 P. maugeansis 仅在南澳大利亚、维多利亚和塔斯马尼亚已知。这些物种很容易通过外壳的形状从外部区分开来，活体动物的颜色和头盾的形态。在解剖学上，它们在边缘牙齿的数量、肌胂板中棒的分布以及男性生殖系统中的眼底解剖学方面存在差异。