The toes have rudimentary webbing, terminal discs, and less well developed subarticular tubercles.

There is a white interorbital band that varies from continuous and straight to interrupted or slightly v-shaped, even reduced to a rudimentary spot.

Individuals have been found in leaf litter and perching in low vegetation.

[1][2] Development is believed to be direct[1] (i.e., there is no free-living larval stage[6]), as in related species.

[1] Arthroleptis nlonakoensis is threatened by habitat loss and degradation caused by agricultural activities, expanding human settlements, and logging.