[2][3] Common name Mixe streamside treefrog has been proposed for this species,[3] whereas the common names yellow-robed treefrog and Cerro Las Flores spikethumb frog referred to the former S. calthula and S. ephemera, respectively.

The fingers are long and slender and bear moderately large discs; only vestigial webbing is present.

A black stripe runs from the snout through the loreal region and eye along the supratympanic fold to the forelimb insertion, thence onto the flank and to the groin; the dark flank marking is usually continuous but sometimes interrupted posteriorly or consisting of elongate, horizontal blotches.

[3] Sarcohyla labeculata occurs along small streams and seeps in cloud forest and secondary growth at elevations of 1,100–1,896 m (3,609–6,220 ft) above sea level.

[1][3] This species is known from only very few locations and is threatened by forest clearance and logging for small-scale agriculture and residential development.