If a male is successful in attracting a female, they will mate and the 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 the size of a golf ball. The egg clutch pictured here was photographed in Drake Bay during the month of August.

Unlike many members of it's genus, Dusty Glass Frog males do not appear to partake in parental care. The thick jelly mass surrounding the eggs apparently provides them with some protection from dehydration and predation. 

After hatching, tadpoles generally squirm from the egg clutch until they fall and sink to the bottom of a stream.

Once they reach the bottom, they lodge themselves between rocks and under the leaf litter where they scavenge for the small particles of organic matter on which they feed.

References:

Hoffmann, H.  2004  Description of the previously unknown tadpole of Hyalinobatrachium pulveratum (Anura: Centrolenidea) Available from: http://www.biologia.ucr.ac.cr/rbt/attachments/volumes/vol52-1/27-HOFFMANN-219-228.pdf

Kubicki, B.  2007  Costa Rica Glass Frogs  Editorial INBio

Leenders, T.  2001  A Guide to Amphibians and Reptiles of Costa Rica  Zona Tropical

Savage, J.  2002  The Amphibians and Reptiles of Costa Rica   University of Chicago Press