Jerarquía taxonómica:
Mustelidae → Lontra annectens (Major, 1897)

Familia:
Mustelidae

Autor:
(Major, 1897)

Sinónimos:
Lutra annectens Major, 1897
Lutra latidens (J. A. Allen, 1908)
Lontra longicaudis subsp. annectens (Major, 1897)
Lutra longicaudis subsp. annectens Major, 1897
Lutra annectens subsp. annectens Major, 1897
Lutra annectens subsp. latidens Pohle, 1920