Thomasomys vulcani Thomas 1898
Thomasomys vulcani Thomas 1898, Ann. Mag. Nat. Hist., ser. 7, 1: 452.
Type Locality: Ecuador, Pichincha Prov., Mt Pichincha, 12,000 ft (3658 m).
Vernacular Names: Pichincha Thomasomys.
Distribution: Ecuadoran Andes, range uncertain.
Discussion: Described as a species of Aepeomys and thereafter classified as a subspecies or synonym of lugens, whether listed under Aepeomys (Musser and Carleton, 1993) or Thomasomys (Cabrera, 1961) . Pacheco (in Voss et al., 2002) considered vulcani to be a form of Thomasomys proper, its status and relationships yet to be resolved.