Acanthion is a subgenus of Old World porcupines in the genus Hystrix. It contains two species, H. javanica and H. brachyura, the smaller species with comparatively smaller nasals. The extant species have only one black ring or coloured part on the quills.Van Weers, D. J. (2005). A taxonomic revision of the Pleistocene Hystrix (Hystricidae, Rodentia) from Eurasia with notes on the evolution of the family. Contributions to Zoology 74(3/4), 301-12.
Included taxa Hystrix (Acanthion) javanica F. Cuvier, 1823 – Sunda porcupine Hystrix (A.) brachyura Linnaeus, 1758 – Malayan porcupine Hystrix (A.) b. brachyura Linnaeus, 1758 Hystrix (A.) b. hodgsoni Gray, 1847 Hystrix (A.) b. subcristata Swinhoe, 1870 Hystrix (A.) b. punungensis subsp. nov.
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