Subspecies and Distribution. L. lL. lagothricha Humboldt, 1812 — SE Colombia, NE Ecuador, NW Brazil, and N Peru, from the Cordillera Oriental, N of the rios Napo and Amazonas, to the Rio Uva, a N bank affluent of the Rio Guaviare (Vichada Department, Colombia), E to the Rio Orinoco and upper Rio Negro to the Venezuelan border and NW Brazil; it is not known if it occurs in Venezuela. L. [. lugens Elliot, 1907 — Colombia, E of the Rio Atrato, throughout the Cordillera Oriental, W of the Rio Ariari (Meta Department), and parts of the Cordillera Central to the northernmost parts of the Serrania de San Lucas (SE Bolivar & N Antioquia departments), in some places up to elevations of 3000 m, and northward in the piedmont forest (now mostly destroyed) to the Rio Arauca (Arauca Department); there is no evidence thatits occurs in neighboring SW Venezuela. in Atelidae

Subspecies and Distribution. L. lL. lagothricha Humboldt, 1812 — SE Colombia, NE Ecuador, NW Brazil, and N Peru, from the Cordillera Oriental, N of the rios Napo and Amazonas, to the Rio Uva, a N bank affluent of the Rio Guaviare (Vichada Department, Colombia), E to the Rio Orinoco and upper Rio Negro to the Venezuelan border and NW Brazil; it is not known if it occurs in Venezuela. L. [. lugens Elliot, 1907 — Colombia, E of the Rio Atrato, throughout the Cordillera Oriental, W of the Rio Ariari (Meta Department), and parts of the Cordillera Central to the northernmost parts of the Serrania de San Lucas (SE Bolivar & N Antioquia departments), in some places up to elevations of 3000 m, and northward in the piedmont forest (now mostly destroyed) to the Rio Arauca (Arauca Department); there is no evidence thatits occurs in neighboring SW Venezuela.