1. Species Plagusia depressa (Fabricius, 1775)
2. Species Plagusia immaculata Lamarck, 1818
3. Species Plagusia integripes Garth, 1973
4. Species Plagusia speciosa Dana, 1851
5. Species Plagusia squamosa (Herbst, 1790)
6. Species Plagusia chabrus (Linnaeus, 1758) accepted as Guinusia chabrus (Linnaeus, 1758)
7. Species Plagusia clavimana Latreille, 1806 accepted as Percnon planissimum (Herbst, 1804) (unaccepted > junior subjective synonym)
8. Species Plagusia delaunayi de Rochebrune, 1883 accepted as Percnon gibbesi (H. Milne Edwards, 1853) (unaccepted > junior subjective synonym)
9. Species Plagusia dentipes (De Haan, 1835) accepted as Guinusia dentipes (De Haan, 1835) (unaccepted > superseded combination)
10. Species Plagusia gaimardi H. Milne Edwards, 1853 accepted as Guinusia chabrus (Linnaeus, 1758) (unaccepted > junior subjective synonym)
11. Species Plagusia glabra Dana, 1851 accepted as Davusia glabra (Dana, 1851) (unaccepted > superseded combination)
12. Species Plagusia gracilis de Saussure, 1858 accepted as Plagusia depressa (Fabricius, 1775) (unaccepted > junior subjective synonym)
13. Species Plagusia orientalis Stimpson, 1858 accepted as Plagusia squamosa (Herbst, 1790) (unaccepted > junior subjective synonym)
14. Species Plagusia sayi De Kay, 1844 accepted as Plagusia depressa (Fabricius, 1775) (unaccepted > junior subjective synonym)
15. Species Plagusia serripes Lamarck, 1818 accepted as Percnon planissimum (Herbst, 1804) (unaccepted > junior subjective synonym)
16. Species Plagusia spinosa MacLeay, 1838 accepted as Guinusia chabrus (Linnaeus, 1758) (unaccepted > junior subjective synonym)
17. Species Plagusia tomeniosa H. Milne Edwards, 1837 accepted as Plagusia tomentosa H. Milne Edwards, 1837 accepted as Plagusia tomentosus H. Milne Edwards, 1837 accepted as Guinusia chabrus (Linnaeus, 1758) (unaccepted > misspelling - incorrect original spelling, inadvertent error (ICZN Art 32.5.1))
18. Species Plagusia tomentosa H. Milne Edwards, 1837 accepted as Plagusia tomentosus H. Milne Edwards, 1837 accepted as Guinusia chabrus (Linnaeus, 1758) (unaccepted > incorrect grammatical agreement of specific epithet)
19. Species Plagusia tomentosus H. Milne Edwards, 1837 accepted as Guinusia chabrus (Linnaeus, 1758) (unaccepted > superseded combination)
20. Species Plagusia tuberculata Lamarck, 1818 accepted as Plagusia squamosa (Herbst, 1790) (unaccepted > junior subjective synonym)

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