Thomasomys erro Anthony 1926

Thomasomys erro Anthony 1926, Am. Mus . Novit., 240: 3.

Type Locality: Ecuador, Napo Prov., headwaters of Río Suno, a small tributary of the upper Río Napo, upper slopes of Volcán Sumaco, about 8000-9000 ft (~ 2438-2743 m).

Vernacular Names: Wandering Thomasomys.

Distribution: Cordillera Oriental, 2400-3600 m, NC Ecuador.

Discussion: Anthony (1926) considered T. erro to be a highly distinctive species that was possibly derived from T. cinereiventer; Cabrera (1961) formalized the latter opinion as the trinomial T. cinereiventer erro, a synonymy followed by Musser and Carleton (1993) but not Tirira (1999). New records of T. erro reported by Voss (2003), who enumerated morphological traits that clearly discriminate the two forms as species.