A clutch of dusty glass frog eggs is seen hanging from the upper surface of a leaf in Costa Rica, Central America.

Dusty Glass Frog Eggs

Costa Rica, Central Americaica

Dusty Glass Frog

About 140 species of glass frogs have been identified, 65 of which were discovered between 1989 and 1998. All are found in Central and/or South America. Costa Rica has a total of thirteen species. All glass frogs are tree dwellers, rarely seen on the ground.

The Dusty Glass Frog has green, translucent skin, with shiny white dots scattered throughout its dorsum. They are small in size. Males generally frequent the forest canopy and call from perches hanging above fast-moving streams and rivers. They are most active on rainy nights and finding one is difficult.

After mating, the Dusty Glass Frog female will typically lay her eggs on the upper surface of a leaf overhanging the water. Clutches include about 50 eggs which are housed in a thick, clear jelly mass about 2 inches in diameter. The thick jelly mass surrounding the eggs provides some protection from dehydration and predation.

After hatching, the tadpoles wiggle out of the egg clutch until they fall and sink to the bottom of a stream. There they lodge themselves between rocks and under the leaf litter, feeding on small particles of organic matter.

Photo © copyright by Dr. Edward Mikol.

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