Stefania tamacuarina is a species of frog in the family Hemiphractidae.

[3][4] The specific name tamacuarina refers to the type locality, a spur ridge north of Pico Tamacuari.

[2] The type series consists of two sub-adult females measuring 43 and 50 mm (1.7 and 2.0 in) in snout–vent length; the maximum size could therefore be considerable higher.

There is also a dorsolateral line made of blackish spots, running above the vaguely brown-mottled flanks.

[2] The species' natural habitats are montane forests[1] at elevations of 350–1,270 m (1,150–4,170 ft) above sea level.