Another pair of more or less distinct skin folds starts near the eyes, converge in the scapular region, and then diverge and fade out.

A dark mark above the posterior edge of the tympanum is usually present, sometimes continuing anteriorly as an ill-defined postocular streak.

[5] Sphenophryne thomsoni is used on Tagula Island for magic: it is believed to provide fertility to land if planted.

[1] Sphenophryne thomsoni occurs on forest floor in primary tropical rainforests at elevations below 500 m (1,600 ft).

It is a very abundant species that is not believed to face significant threats—its use on Tagula Island for magic is not occurring at levels that would pose a threat.