The genus Peronia Fleming, 1822 includes all the onchidiid slugs with dorsal gills. Its taxonomy is revised for the first time based on a large collection of fresh material from the entire Indo-West Pacific, from South Africa to Hawaii. Nine species are supported by mitochondrial (COI and 16S) and nuclear (ITS2 and 28S) sequences as well as comparative anatomy. All types available were examined and the nomenclatural status of each existing name in the genus is addressed. Of 31 Peronia species-group names available, 27 are regarded as invalid (twenty-one synonyms, sixteen of which are new, five nomina dubia, and one homonym), and four as valid: Peronia peronii (Cuvier, 1804), Peronia verruculata (Cuvier, 1830), Peronia platei (Hoffmann, 1928), and Peronia madagascariensis (Labbé, 1934a). Five new species names are created: P. griffithsi Dayrat & Goulding, sp. nov., P. okinawensis Dayrat & Goulding, sp. nov., P. setoensis Dayrat & Goulding, sp. nov., P. sydneyensis Dayrat & Goulding, sp. nov., and P. willani Dayrat & Goulding, sp. nov.Peronia species are cryptic externally but can be distinguished using internal characters, with the exception of P. platei and P. setoensis. The anatomy of most species is described in detail here for the first time. All the secondary literature is commented on and historical specimens from museum collections were also examined to better establish species distributions. The genus Peronia includes two species that are widespread across the Indo-West Pacific (P. verruculata and P. peronii) as well as endemic species: P. okinawensis and P. setoensis are endemic to Japan, and P. willani is endemic to Northern Territory, Australia. Many new geographical records are provided, as well as a key to the species using morphological traits.

中文翻译：

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对Peronia Fleming属的系统修订，1822年（Gastropoda，Euthyneura，Pulmonata，Onchidiidae）

Peronia Fleming属（Peronia Fleming，1822）包括所有带有背g的Onchidiid sl。根据从南非到夏威夷的整个印度西太平洋地区的大量新鲜材料，首次修订了其分类法。线粒体（COI和16S）和核（ITS2和28S）序列以及比较解剖学支持9种。检查所有可用的类型，并解决该属中每个现有名称的命名法状态。在可用的31种Peronia物种组名称中，有27种被认为是无效的（二十一个同义词，其中十六个是新的，五个nomina dubia，和一个同名），而四个有效：Peronia peronii（Cuvier，1804年），Peronia verruculata （Cuvier，1830），Peronia platei（Hoffmann，1928）和Peronia madagascariensis（Labbé，1934a）。创建了五个新物种名称：P。griffithsi Dayrat和 Goulding，sp。十一月，P。okinawensis Dayrat＆Goulding，sp.。十一月，P。setoensis Dayrat＆Goulding，sp。十一月，P。sydneyensis Dayrat＆Goulding，sp。十一月，和P. willani Dayrat＆Goulding，sp。十一月Peronia物种在外部是隐性的，但可以使用内部特征来区分，但P. platei和P. setoensis除外。大多数物种的解剖在这里都是首次详细描述。对所有二手文献都进行了评论，并对博物馆收藏的历史标本进行了检查，以更好地确定物种分布。Peronia属包括两个分布在印度洋-西太平洋的物种（P. verruculata和P.peronii）以及特有种：okinawensis和P. setoensis是日本特有的，而Willani则是北部特有的。澳大利亚领土。