In the past, sometimes placed in genus Sphenurus. Closely allied to T. sphenurus, T. permagnus and T. formosae, and more distantly to T. oxyurus species-group. Race sororius only slightly differentiated from nominate, and possibly better merged with it. Little-known Hainan form initially assigned to sororius, but later named oblitus owing to its smaller size; this race, although said to be closest to sororius, was subsequently included in T. sphenurus (e.g. in HBW), presumably in error; oblitus now considered indistinguishable from murielae. Described form “Sphenocercus sphenurus lungchowensis” is likewise a synonym of murielae#R. Four subspecies currently recognized.
Food and feeding
Status and conservation
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