Asia-Tropical: Philippines (Philippines present), Mindanao present, Samar present
Malesia: Philippines (Mindanao, Samar), at low altitudes.
The name Lastrea exigua J. Sm., on which Aspidium exiguum Kunze ex Mett. was based, was published (without description) with citation of Cuming 251 and 272, types of N. philippina and N. inaequilobata; Mettenius cited P. nervosa Fee under his var. a. If transferred to Thelypteris, N. nervosa will need another specific epithet, as T. nervosa (Klotzsch) Tryon represents another species.