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Tachyoryctes rex
''Tachyoryctes rex'', also known as the King African mole-rat,〔Musser and Carleton, 2005, p. 924〕 King mole-rat,〔Duff and Lawson, 2004〕 or Alpine mole-rat,〔Loring in Roosevelt, 1910, p. 547〕 is a burrowing rodent in the genus ''Tachyoryctes'' of family Spalacidae. It only occurs high on Mount Kenya, where it is common. Originally described as a separate species related to ''T. audax'' in 1910, some classify it as the same species as ''T. splendens''.
It is a very large, brownish species, with head and body length ranging from . The young are dark with irregular white patches on their underparts. The animal builds large burrows and perhaps associated mounds and eats plant roots.
==Taxonomy==
In 1909, John Alden Loring collected the holotype while on the Smithsonian-Roosevelt African Expedition led by Theodore Roosevelt.〔Anonymous, 1908; Heller, 1910, pp. 1, 4〕 The next year, Edmund Heller described the species as ''Tachyoryctes rex''; he thought it most closely related to another Kenyan species, ''T. audax''.〔 In 1919, Ned Hollister provided additional information using more material, and affirmed the relationship between ''T. rex'' and ''T. audax''. He noted that the two were similar in coloration, but that ''T. rex'' was much larger;〔Hollister, 1919, p. 42〕 according to Heller, ''T. audax'' is somewhat darker in color.〔 Since 1974, some taxonomic works have included ''T. rex'' and many other ''Tachyoryctes'' species in ''T. splendens'', though without evaluation of the distinctive characters of the previously recognized species.〔Musser and Carleton, 2005, pp. 922–923〕 The 2009 IUCN Red List follows this arrangement,〔Schlitter et al., 2008〕 but the 2005 third edition of ''Mammal Species of the World'' describes ''T. rex'' as a "distinctive species".〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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