It is found in the south-western Cameroon and in the extreme southern Nigeria at low altitudes.

[4] Dorsal markings, typical for the genus Cardioglossa, consist of an hour-glass pattern, with a separate blotch on the head.

Individuals can be spotted in small groups along forest watercourses, often in undergrowth among dead leaves and in holes.

[1] Cardioglossa nigromaculata is fairly common species, but it is often missing from seemingly suitable habitat.

The overall population is believed to be decreasing because of habitat loss caused by urbanization, agriculture, and logging.