I just happened to have my camera with me the morning I saw this foam under the leaves of a short weed (verbena family, maybe?).
Looked a little closer and saw something there:
What could it be (click on image for a larger view)?
I put the image up on Flickr and almost immediately a photographer there using the name aw c’mon suggested a possible identification: the Túngara frog, a Leptodactylid. He says:
Several types of frogs lay
their eggs in this manner some froth
masses containing just a few eggs
some with much more. I listed one of
the more common species.
The Encyclopedia Britannica says the tungara frog (Physalaemus pustulosus) is
also called Central American mud-puddle frog terrestrial, toadlike frog common in moist, lowland sites from Mexico to northern South America.
The frog is cryptically coloured, its rough brown skin matching the leaf litter in which it lives. Although a mere 25–35 mm (1–1.4 inches) in length, this small amphibian consumes a wide range of insects; unlike many frogs of its size, it does not specifically feed on ants.
Not a positive ID, but really neat!
