Appearance[change | change source]
Unlike other frogs, I. calypsa has spiky spines coming out of its head and back. It is bright green with some brown marks. Male and female frogs have different kinds of dark marks. This frog's throat and stomach are white. It does not have bars on its legs. It has large eyes and a short nose.
Unlike other tadpoles, I. calypsa tadpoles do not have disks on their mouths.
Actions[change | change source]
This frog hides during the day and moves around night.
When it is time for the females to lay eggs, adult male frogs, adult female frogs, and young frogs will come to streams in the forest. Frogs usually come back to the same one every year. Scientists watching the frogs could not find the young frogs after a few days, but the adult frogs stayed.
Male frogs are territorial. They will choose one place to sit and sing and return to the same one for many years. Usually, they choose a plant hanging over a flowing stream. Male frogs are usually at least 1.9 meters apart.
The female frog lays eggs on the undersides of leaves, the side facing the ground. Then she goes away from the stream. When the tadpoles hatch, they fall into the water. Scientists only saw eggs on the tops of the leaves a few times. They take 270 days to grow into young frogs.
The female frog lays only one clutch (group of eggs) per visit to the stream, but sometimes she comes back and lays a second or third clutch.
Predators[change | change source]
Some insects, for example crickets, eat this frog's eggs. Parasite flies also lay their own eggs in with the frog's egg. When the fly larva hatch, they eat all the frog eggs nearby. Between 1991 and 1996, one team of scientists watched 615 clutches (groups) of frog eggs. 65% of them did not have even one egg that hatched. About a third of these were because of flies. Frog eggs can also die if they dry out.
Threats[change | change source]
Names[change | change source]
References[change | change source]
- David Chen (April 25, 2008). Kellie Whittaker; Michelle Koo (eds.). "Isthmohyla calypsa". Amphibiaweb. University of California, Berkeley. Retrieved March 30, 2022.
- IUCN SSC Amphibian Specialist Group (2019). "Isthmohyla calypsa". The IUCN Red List of Threatened Species. 3.1: e.T55432A54346121. doi:10.2305/IUCN.UK.2020-3.RLTS.T55432A54346121.en. S2CID 241968403. 55432. Retrieved March 31, 2022.
- "Isthmohyla calypsa (Lips, 1996)". Amphibian Species of the World 6.0, an Online Reference. American Museum of Natural History. Retrieved March 30, 2022.